204911240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{643}}^1$

素因数の和:942

約数の個数: 64

約数和(自身を含む): 478517760

約数和(自身を除く): 273606520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 257, 310, 514, 620, 643, 1028, 1240, 1285, 1286, 2056, 2570, 2572, 3215, 5140, 5144, 6430, 7967, 10280, 12860, 15934, 19933, 25720, 31868, 39835, 39866, 63736, 79670, 79732, 99665, 159340, 159464, 165251, 199330, 318680, 330502, 398660, 661004, 797320, 826255, 1322008, 1652510, 3305020, 5122781, 6610040, 10245562, 20491124, 25613905, 40982248, 51227810, 102455620, 204911240]

約数ペア:

[(1, 204911240), (2, 102455620), (4, 51227810), (5, 40982248), (8, 25613905), (10, 20491124), (20, 10245562), (31, 6610040), (40, 5122781), (62, 3305020), (124, 1652510), (155, 1322008), (248, 826255), (257, 797320), (310, 661004), (514, 398660), (620, 330502), (643, 318680), (1028, 199330), (1240, 165251), (1285, 159464), (1286, 159340), (2056, 99665), (2570, 79732), (2572, 79670), (3215, 63736), (5140, 39866), (5144, 39835), (6430, 31868), (7967, 25720), (10280, 19933), (12860, 15934)]