21154710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:130

約数の個数: 96

約数和(自身を含む): 56060928

約数和(自身を除く): 34906218

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 31, 43, 46, 62, 69, 86, 93, 115, 129, 138, 155, 186, 215, 230, 258, 310, 345, 430, 465, 529, 645, 690, 713, 930, 989, 1058, 1290, 1333, 1426, 1587, 1978, 2139, 2645, 2666, 2967, 3174, 3565, 3999, 4278, 4945, 5290, 5934, 6665, 7130, 7935, 7998, 9890, 10695, 13330, 14835, 15870, 16399, 19995, 21390, 22747, 29670, 30659, 32798, 39990, 45494, 49197, 61318, 68241, 81995, 91977, 98394, 113735, 136482, 153295, 163990, 183954, 227470, 245985, 306590, 341205, 459885, 491970, 682410, 705157, 919770, 1410314, 2115471, 3525785, 4230942, 7051570, 10577355, 21154710]

約数ペア:

[(1, 21154710), (2, 10577355), (3, 7051570), (5, 4230942), (6, 3525785), (10, 2115471), (15, 1410314), (23, 919770), (30, 705157), (31, 682410), (43, 491970), (46, 459885), (62, 341205), (69, 306590), (86, 245985), (93, 227470), (115, 183954), (129, 163990), (138, 153295), (155, 136482), (186, 113735), (215, 98394), (230, 91977), (258, 81995), (310, 68241), (345, 61318), (430, 49197), (465, 45494), (529, 39990), (645, 32798), (690, 30659), (713, 29670), (930, 22747), (989, 21390), (1058, 19995), (1290, 16399), (1333, 15870), (1426, 14835), (1587, 13330), (1978, 10695), (2139, 9890), (2645, 7998), (2666, 7935), (2967, 7130), (3174, 6665), (3565, 5934), (3999, 5290), (4278, 4945)]