28956640

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2549}}^1$

素因数の和:2635

約数の個数: 48

約数和(自身を含む): 69400800

約数和(自身を除く): 40444160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2549, 2840, 5098, 5680, 10196, 11360, 12745, 20392, 25490, 40784, 50980, 81568, 101960, 180979, 203920, 361958, 407840, 723916, 904895, 1447832, 1809790, 2895664, 3619580, 5791328, 7239160, 14478320, 28956640]

約数ペア:

[(1, 28956640), (2, 14478320), (4, 7239160), (5, 5791328), (8, 3619580), (10, 2895664), (16, 1809790), (20, 1447832), (32, 904895), (40, 723916), (71, 407840), (80, 361958), (142, 203920), (160, 180979), (284, 101960), (355, 81568), (568, 50980), (710, 40784), (1136, 25490), (1420, 20392), (2272, 12745), (2549, 11360), (2840, 10196), (5098, 5680)]