20911150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{607}}^1$

素因数の和:685

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 21836114

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 53, 65, 106, 130, 265, 325, 530, 607, 650, 689, 1214, 1325, 1378, 2650, 3035, 3445, 6070, 6890, 7891, 15175, 15782, 17225, 30350, 32171, 34450, 39455, 64342, 78910, 160855, 197275, 321710, 394550, 418223, 804275, 836446, 1608550, 2091115, 4182230, 10455575, 20911150]

約数ペア:

[(1, 20911150), (2, 10455575), (5, 4182230), (10, 2091115), (13, 1608550), (25, 836446), (26, 804275), (50, 418223), (53, 394550), (65, 321710), (106, 197275), (130, 160855), (265, 78910), (325, 64342), (530, 39455), (607, 34450), (650, 32171), (689, 30350), (1214, 17225), (1325, 15782), (1378, 15175), (2650, 7891), (3035, 6890), (3445, 6070)]