40649890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1\times {\mathrm{491}}^1$

素因数の和:1002

約数の個数: 32

約数和(自身を含む): 77791104

約数和(自身を除く): 37141214

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 487, 491, 974, 982, 2435, 2455, 4870, 4910, 8279, 8347, 16558, 16694, 41395, 41735, 82790, 83470, 239117, 478234, 1195585, 2391170, 4064989, 8129978, 20324945, 40649890]

約数ペア:

[(1, 40649890), (2, 20324945), (5, 8129978), (10, 4064989), (17, 2391170), (34, 1195585), (85, 478234), (170, 239117), (487, 83470), (491, 82790), (974, 41735), (982, 41395), (2435, 16694), (2455, 16558), (4870, 8347), (4910, 8279)]