21443760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:140

約数の個数: 240

約数和(自身を含む): 81244800

約数和(自身を除く): 59801040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 29, 30, 36, 39, 40, 45, 48, 52, 58, 60, 65, 72, 78, 79, 80, 87, 90, 104, 116, 117, 120, 130, 144, 145, 156, 158, 174, 180, 195, 208, 232, 234, 237, 240, 260, 261, 290, 312, 316, 348, 360, 377, 390, 395, 435, 464, 468, 474, 520, 522, 580, 585, 624, 632, 696, 711, 720, 754, 780, 790, 870, 936, 948, 1027, 1040, 1044, 1131, 1160, 1170, 1185, 1264, 1305, 1392, 1422, 1508, 1560, 1580, 1740, 1872, 1885, 1896, 2054, 2088, 2262, 2291, 2320, 2340, 2370, 2610, 2844, 3016, 3081, 3120, 3160, 3393, 3480, 3555, 3770, 3792, 4108, 4176, 4524, 4582, 4680, 4740, 5135, 5220, 5655, 5688, 6032, 6162, 6320, 6786, 6873, 6960, 7110, 7540, 8216, 9048, 9164, 9243, 9360, 9480, 10270, 10440, 11310, 11376, 11455, 12324, 13572, 13746, 14220, 15080, 15405, 16432, 16965, 18096, 18328, 18486, 18960, 20540, 20619, 20880, 22620, 22910, 24648, 27144, 27492, 28440, 29783, 30160, 30810, 33930, 34365, 36656, 36972, 41080, 41238, 45240, 45820, 46215, 49296, 54288, 54984, 56880, 59566, 61620, 67860, 68730, 73944, 82160, 82476, 89349, 90480, 91640, 92430, 103095, 109968, 119132, 123240, 135720, 137460, 147888, 148915, 164952, 178698, 183280, 184860, 206190, 238264, 246480, 268047, 271440, 274920, 297830, 329904, 357396, 369720, 412380, 446745, 476528, 536094, 549840, 595660, 714792, 739440, 824760, 893490, 1072188, 1191320, 1340235, 1429584, 1649520, 1786980, 2144376, 2382640, 2680470, 3573960, 4288752, 5360940, 7147920, 10721880, 21443760]

約数ペア:

[(1, 21443760), (2, 10721880), (3, 7147920), (4, 5360940), (5, 4288752), (6, 3573960), (8, 2680470), (9, 2382640), (10, 2144376), (12, 1786980), (13, 1649520), (15, 1429584), (16, 1340235), (18, 1191320), (20, 1072188), (24, 893490), (26, 824760), (29, 739440), (30, 714792), (36, 595660), (39, 549840), (40, 536094), (45, 476528), (48, 446745), (52, 412380), (58, 369720), (60, 357396), (65, 329904), (72, 297830), (78, 274920), (79, 271440), (80, 268047), (87, 246480), (90, 238264), (104, 206190), (116, 184860), (117, 183280), (120, 178698), (130, 164952), (144, 148915), (145, 147888), (156, 137460), (158, 135720), (174, 123240), (180, 119132), (195, 109968), (208, 103095), (232, 92430), (234, 91640), (237, 90480), (240, 89349), (260, 82476), (261, 82160), (290, 73944), (312, 68730), (316, 67860), (348, 61620), (360, 59566), (377, 56880), (390, 54984), (395, 54288), (435, 49296), (464, 46215), (468, 45820), (474, 45240), (520, 41238), (522, 41080), (580, 36972), (585, 36656), (624, 34365), (632, 33930), (696, 30810), (711, 30160), (720, 29783), (754, 28440), (780, 27492), (790, 27144), (870, 24648), (936, 22910), (948, 22620), (1027, 20880), (1040, 20619), (1044, 20540), (1131, 18960), (1160, 18486), (1170, 18328), (1185, 18096), (1264, 16965), (1305, 16432), (1392, 15405), (1422, 15080), (1508, 14220), (1560, 13746), (1580, 13572), (1740, 12324), (1872, 11455), (1885, 11376), (1896, 11310), (2054, 10440), (2088, 10270), (2262, 9480), (2291, 9360), (2320, 9243), (2340, 9164), (2370, 9048), (2610, 8216), (2844, 7540), (3016, 7110), (3081, 6960), (3120, 6873), (3160, 6786), (3393, 6320), (3480, 6162), (3555, 6032), (3770, 5688), (3792, 5655), (4108, 5220), (4176, 5135), (4524, 4740), (4582, 4680)]