20382940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 24432740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 113, 116, 145, 226, 290, 311, 452, 565, 580, 622, 1130, 1244, 1555, 2260, 3110, 3277, 6220, 6554, 9019, 13108, 16385, 18038, 32770, 35143, 36076, 45095, 65540, 70286, 90190, 140572, 175715, 180380, 351430, 702860, 1019147, 2038294, 4076588, 5095735, 10191470, 20382940]

約数ペア:

[(1, 20382940), (2, 10191470), (4, 5095735), (5, 4076588), (10, 2038294), (20, 1019147), (29, 702860), (58, 351430), (113, 180380), (116, 175715), (145, 140572), (226, 90190), (290, 70286), (311, 65540), (452, 45095), (565, 36076), (580, 35143), (622, 32770), (1130, 18038), (1244, 16385), (1555, 13108), (2260, 9019), (3110, 6554), (3277, 6220)]