649041640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73421}}^1$

素因数の和:73462

約数の個数: 64

約数和(自身を含む): 1665210960

約数和(自身を除く): 1016169320

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 4420, 8840, 73421, 146842, 293684, 367105, 587368, 734210, 954473, 1248157, 1468420, 1908946, 2496314, 2936840, 3817892, 4772365, 4992628, 6240785, 7635784, 9544730, 9985256, 12481570, 16226041, 19089460, 24963140, 32452082, 38178920, 49926280, 64904164, 81130205, 129808328, 162260410, 324520820, 649041640]

約数ペア:

[(1, 649041640), (2, 324520820), (4, 162260410), (5, 129808328), (8, 81130205), (10, 64904164), (13, 49926280), (17, 38178920), (20, 32452082), (26, 24963140), (34, 19089460), (40, 16226041), (52, 12481570), (65, 9985256), (68, 9544730), (85, 7635784), (104, 6240785), (130, 4992628), (136, 4772365), (170, 3817892), (221, 2936840), (260, 2496314), (340, 1908946), (442, 1468420), (520, 1248157), (680, 954473), (884, 734210), (1105, 587368), (1768, 367105), (2210, 293684), (4420, 146842), (8840, 73421)]