20701600

素因数分解:

$2^5\times 5^2\times {\mathrm{113}}^1\times {\mathrm{229}}^1$

素因数の和:362

約数の個数: 72

約数和(自身を含む): 51207660

約数和(自身を除く): 30506060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 113, 160, 200, 226, 229, 400, 452, 458, 565, 800, 904, 916, 1130, 1145, 1808, 1832, 2260, 2290, 2825, 3616, 3664, 4520, 4580, 5650, 5725, 7328, 9040, 9160, 11300, 11450, 18080, 18320, 22600, 22900, 25877, 36640, 45200, 45800, 51754, 90400, 91600, 103508, 129385, 183200, 207016, 258770, 414032, 517540, 646925, 828064, 1035080, 1293850, 2070160, 2587700, 4140320, 5175400, 10350800, 20701600]

約数ペア:

[(1, 20701600), (2, 10350800), (4, 5175400), (5, 4140320), (8, 2587700), (10, 2070160), (16, 1293850), (20, 1035080), (25, 828064), (32, 646925), (40, 517540), (50, 414032), (80, 258770), (100, 207016), (113, 183200), (160, 129385), (200, 103508), (226, 91600), (229, 90400), (400, 51754), (452, 45800), (458, 45200), (565, 36640), (800, 25877), (904, 22900), (916, 22600), (1130, 18320), (1145, 18080), (1808, 11450), (1832, 11300), (2260, 9160), (2290, 9040), (2825, 7328), (3616, 5725), (3664, 5650), (4520, 4580)]