81240960

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:189

約数の個数: 256

約数和(自身を含む): 290822400

約数和(自身を除く): 209581440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 19, 20, 24, 30, 32, 34, 38, 40, 48, 51, 57, 60, 64, 68, 76, 80, 85, 95, 96, 102, 114, 120, 128, 131, 136, 152, 160, 170, 190, 192, 204, 228, 240, 255, 262, 272, 285, 304, 320, 323, 340, 380, 384, 393, 408, 456, 480, 510, 524, 544, 570, 608, 640, 646, 655, 680, 760, 786, 816, 912, 960, 969, 1020, 1048, 1088, 1140, 1216, 1292, 1310, 1360, 1520, 1572, 1615, 1632, 1824, 1920, 1938, 1965, 2040, 2096, 2176, 2227, 2280, 2432, 2489, 2584, 2620, 2720, 3040, 3144, 3230, 3264, 3648, 3876, 3930, 4080, 4192, 4454, 4560, 4845, 4978, 5168, 5240, 5440, 6080, 6288, 6460, 6528, 6681, 7296, 7467, 7752, 7860, 8160, 8384, 8908, 9120, 9690, 9956, 10336, 10480, 10880, 11135, 12160, 12445, 12576, 12920, 13362, 14934, 15504, 15720, 16320, 16768, 17816, 18240, 19380, 19912, 20672, 20960, 22270, 24890, 25152, 25840, 26724, 29868, 31008, 31440, 32640, 33405, 35632, 36480, 37335, 38760, 39824, 41344, 41920, 42313, 44540, 49780, 50304, 51680, 53448, 59736, 62016, 62880, 66810, 71264, 74670, 77520, 79648, 83840, 84626, 89080, 99560, 103360, 106896, 119472, 124032, 125760, 126939, 133620, 142528, 149340, 155040, 159296, 169252, 178160, 199120, 206720, 211565, 213792, 238944, 251520, 253878, 267240, 285056, 298680, 310080, 318592, 338504, 356320, 398240, 423130, 427584, 477888, 507756, 534480, 597360, 620160, 634695, 677008, 712640, 796480, 846260, 855168, 955776, 1015512, 1068960, 1194720, 1269390, 1354016, 1425280, 1592960, 1692520, 2031024, 2137920, 2389440, 2538780, 2708032, 3385040, 4062048, 4275840, 4778880, 5077560, 5416064, 6770080, 8124096, 10155120, 13540160, 16248192, 20310240, 27080320, 40620480, 81240960]

約数ペア:

[(1, 81240960), (2, 40620480), (3, 27080320), (4, 20310240), (5, 16248192), (6, 13540160), (8, 10155120), (10, 8124096), (12, 6770080), (15, 5416064), (16, 5077560), (17, 4778880), (19, 4275840), (20, 4062048), (24, 3385040), (30, 2708032), (32, 2538780), (34, 2389440), (38, 2137920), (40, 2031024), (48, 1692520), (51, 1592960), (57, 1425280), (60, 1354016), (64, 1269390), (68, 1194720), (76, 1068960), (80, 1015512), (85, 955776), (95, 855168), (96, 846260), (102, 796480), (114, 712640), (120, 677008), (128, 634695), (131, 620160), (136, 597360), (152, 534480), (160, 507756), (170, 477888), (190, 427584), (192, 423130), (204, 398240), (228, 356320), (240, 338504), (255, 318592), (262, 310080), (272, 298680), (285, 285056), (304, 267240), (320, 253878), (323, 251520), (340, 238944), (380, 213792), (384, 211565), (393, 206720), (408, 199120), (456, 178160), (480, 169252), (510, 159296), (524, 155040), (544, 149340), (570, 142528), (608, 133620), (640, 126939), (646, 125760), (655, 124032), (680, 119472), (760, 106896), (786, 103360), (816, 99560), (912, 89080), (960, 84626), (969, 83840), (1020, 79648), (1048, 77520), (1088, 74670), (1140, 71264), (1216, 66810), (1292, 62880), (1310, 62016), (1360, 59736), (1520, 53448), (1572, 51680), (1615, 50304), (1632, 49780), (1824, 44540), (1920, 42313), (1938, 41920), (1965, 41344), (2040, 39824), (2096, 38760), (2176, 37335), (2227, 36480), (2280, 35632), (2432, 33405), (2489, 32640), (2584, 31440), (2620, 31008), (2720, 29868), (3040, 26724), (3144, 25840), (3230, 25152), (3264, 24890), (3648, 22270), (3876, 20960), (3930, 20672), (4080, 19912), (4192, 19380), (4454, 18240), (4560, 17816), (4845, 16768), (4978, 16320), (5168, 15720), (5240, 15504), (5440, 14934), (6080, 13362), (6288, 12920), (6460, 12576), (6528, 12445), (6681, 12160), (7296, 11135), (7467, 10880), (7752, 10480), (7860, 10336), (8160, 9956), (8384, 9690), (8908, 9120)]