321721920

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{661}}^1$

素因数の和:710

約数の個数: 252

約数和(自身を含む): 1200072276

約数和(自身を除く): 878350356

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 169, 180, 192, 195, 208, 234, 240, 260, 288, 312, 320, 338, 360, 390, 416, 468, 480, 507, 520, 576, 585, 624, 661, 676, 720, 780, 832, 845, 936, 960, 1014, 1040, 1170, 1248, 1322, 1352, 1440, 1521, 1560, 1690, 1872, 1983, 2028, 2080, 2340, 2496, 2535, 2644, 2704, 2880, 3042, 3120, 3305, 3380, 3744, 3966, 4056, 4160, 4680, 5070, 5288, 5408, 5949, 6084, 6240, 6610, 6760, 7488, 7605, 7932, 8112, 8593, 9360, 9915, 10140, 10576, 10816, 11898, 12168, 12480, 13220, 13520, 15210, 15864, 16224, 17186, 18720, 19830, 20280, 21152, 23796, 24336, 25779, 26440, 27040, 29745, 30420, 31728, 32448, 34372, 37440, 39660, 40560, 42304, 42965, 47592, 48672, 51558, 52880, 54080, 59490, 60840, 63456, 68744, 77337, 79320, 81120, 85930, 95184, 97344, 103116, 105760, 111709, 118980, 121680, 126912, 128895, 137488, 154674, 158640, 162240, 171860, 190368, 206232, 211520, 223418, 237960, 243360, 257790, 274976, 309348, 317280, 335127, 343720, 380736, 386685, 412464, 446836, 475920, 486720, 515580, 549952, 558545, 618696, 634560, 670254, 687440, 773370, 824928, 893672, 951840, 1005381, 1031160, 1117090, 1237392, 1340508, 1374880, 1546740, 1649856, 1675635, 1787344, 1903680, 2010762, 2062320, 2234180, 2474784, 2681016, 2749760, 3093480, 3351270, 3574688, 4021524, 4124640, 4468360, 4949568, 5026905, 5362032, 6186960, 6702540, 7149376, 8043048, 8249280, 8936720, 10053810, 10724064, 12373920, 13405080, 16086096, 17873440, 20107620, 21448128, 24747840, 26810160, 32172192, 35746880, 40215240, 53620320, 64344384, 80430480, 107240640, 160860960, 321721920]

約数ペア:

[(1, 321721920), (2, 160860960), (3, 107240640), (4, 80430480), (5, 64344384), (6, 53620320), (8, 40215240), (9, 35746880), (10, 32172192), (12, 26810160), (13, 24747840), (15, 21448128), (16, 20107620), (18, 17873440), (20, 16086096), (24, 13405080), (26, 12373920), (30, 10724064), (32, 10053810), (36, 8936720), (39, 8249280), (40, 8043048), (45, 7149376), (48, 6702540), (52, 6186960), (60, 5362032), (64, 5026905), (65, 4949568), (72, 4468360), (78, 4124640), (80, 4021524), (90, 3574688), (96, 3351270), (104, 3093480), (117, 2749760), (120, 2681016), (130, 2474784), (144, 2234180), (156, 2062320), (160, 2010762), (169, 1903680), (180, 1787344), (192, 1675635), (195, 1649856), (208, 1546740), (234, 1374880), (240, 1340508), (260, 1237392), (288, 1117090), (312, 1031160), (320, 1005381), (338, 951840), (360, 893672), (390, 824928), (416, 773370), (468, 687440), (480, 670254), (507, 634560), (520, 618696), (576, 558545), (585, 549952), (624, 515580), (661, 486720), (676, 475920), (720, 446836), (780, 412464), (832, 386685), (845, 380736), (936, 343720), (960, 335127), (1014, 317280), (1040, 309348), (1170, 274976), (1248, 257790), (1322, 243360), (1352, 237960), (1440, 223418), (1521, 211520), (1560, 206232), (1690, 190368), (1872, 171860), (1983, 162240), (2028, 158640), (2080, 154674), (2340, 137488), (2496, 128895), (2535, 126912), (2644, 121680), (2704, 118980), (2880, 111709), (3042, 105760), (3120, 103116), (3305, 97344), (3380, 95184), (3744, 85930), (3966, 81120), (4056, 79320), (4160, 77337), (4680, 68744), (5070, 63456), (5288, 60840), (5408, 59490), (5949, 54080), (6084, 52880), (6240, 51558), (6610, 48672), (6760, 47592), (7488, 42965), (7605, 42304), (7932, 40560), (8112, 39660), (8593, 37440), (9360, 34372), (9915, 32448), (10140, 31728), (10576, 30420), (10816, 29745), (11898, 27040), (12168, 26440), (12480, 25779), (13220, 24336), (13520, 23796), (15210, 21152), (15864, 20280), (16224, 19830), (17186, 18720)]