21429720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1$

素因数の和:290

約数の個数: 192

約数和(自身を含む): 79279200

約数和(自身を除く): 57849480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 19, 20, 24, 26, 30, 36, 38, 39, 40, 45, 52, 57, 60, 65, 72, 76, 78, 90, 95, 104, 114, 117, 120, 130, 152, 156, 171, 180, 190, 195, 228, 234, 241, 247, 260, 285, 312, 342, 360, 380, 390, 456, 468, 482, 494, 520, 570, 585, 684, 723, 741, 760, 780, 855, 936, 964, 988, 1140, 1170, 1205, 1235, 1368, 1446, 1482, 1560, 1710, 1928, 1976, 2169, 2223, 2280, 2340, 2410, 2470, 2892, 2964, 3133, 3420, 3615, 3705, 4338, 4446, 4579, 4680, 4820, 4940, 5784, 5928, 6266, 6840, 7230, 7410, 8676, 8892, 9158, 9399, 9640, 9880, 10845, 11115, 12532, 13737, 14460, 14820, 15665, 17352, 17784, 18316, 18798, 21690, 22230, 22895, 25064, 27474, 28197, 28920, 29640, 31330, 36632, 37596, 41211, 43380, 44460, 45790, 46995, 54948, 56394, 59527, 62660, 68685, 75192, 82422, 86760, 88920, 91580, 93990, 109896, 112788, 119054, 125320, 137370, 140985, 164844, 178581, 183160, 187980, 206055, 225576, 238108, 274740, 281970, 297635, 329688, 357162, 375960, 412110, 476216, 535743, 549480, 563940, 595270, 714324, 824220, 892905, 1071486, 1127880, 1190540, 1428648, 1648440, 1785810, 2142972, 2381080, 2678715, 3571620, 4285944, 5357430, 7143240, 10714860, 21429720]

約数ペア:

[(1, 21429720), (2, 10714860), (3, 7143240), (4, 5357430), (5, 4285944), (6, 3571620), (8, 2678715), (9, 2381080), (10, 2142972), (12, 1785810), (13, 1648440), (15, 1428648), (18, 1190540), (19, 1127880), (20, 1071486), (24, 892905), (26, 824220), (30, 714324), (36, 595270), (38, 563940), (39, 549480), (40, 535743), (45, 476216), (52, 412110), (57, 375960), (60, 357162), (65, 329688), (72, 297635), (76, 281970), (78, 274740), (90, 238108), (95, 225576), (104, 206055), (114, 187980), (117, 183160), (120, 178581), (130, 164844), (152, 140985), (156, 137370), (171, 125320), (180, 119054), (190, 112788), (195, 109896), (228, 93990), (234, 91580), (241, 88920), (247, 86760), (260, 82422), (285, 75192), (312, 68685), (342, 62660), (360, 59527), (380, 56394), (390, 54948), (456, 46995), (468, 45790), (482, 44460), (494, 43380), (520, 41211), (570, 37596), (585, 36632), (684, 31330), (723, 29640), (741, 28920), (760, 28197), (780, 27474), (855, 25064), (936, 22895), (964, 22230), (988, 21690), (1140, 18798), (1170, 18316), (1205, 17784), (1235, 17352), (1368, 15665), (1446, 14820), (1482, 14460), (1560, 13737), (1710, 12532), (1928, 11115), (1976, 10845), (2169, 9880), (2223, 9640), (2280, 9399), (2340, 9158), (2410, 8892), (2470, 8676), (2892, 7410), (2964, 7230), (3133, 6840), (3420, 6266), (3615, 5928), (3705, 5784), (4338, 4940), (4446, 4820), (4579, 4680)]