205366960

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{15749}}^1$

素因数の和:15925

約数の個数: 40

約数和(自身を含む): 480438000

約数和(自身を除く): 275071040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6520, 13040, 15749, 31498, 62996, 78745, 125992, 157490, 251984, 314980, 629960, 1259920, 2567087, 5134174, 10268348, 12835435, 20536696, 25670870, 41073392, 51341740, 102683480, 205366960]

約数ペア:

[(1, 205366960), (2, 102683480), (4, 51341740), (5, 41073392), (8, 25670870), (10, 20536696), (16, 12835435), (20, 10268348), (40, 5134174), (80, 2567087), (163, 1259920), (326, 629960), (652, 314980), (815, 251984), (1304, 157490), (1630, 125992), (2608, 78745), (3260, 62996), (6520, 31498), (13040, 15749)]