20613340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2179}}^1$

素因数の和:2242

約数の個数: 48

約数和(自身を含む): 48343680

約数和(自身を除く): 27730340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2179, 2365, 4358, 4730, 8716, 9460, 10895, 21790, 23969, 43580, 47938, 93697, 95876, 119845, 187394, 239690, 374788, 468485, 479380, 936970, 1030667, 1873940, 2061334, 4122668, 5153335, 10306670, 20613340]

約数ペア:

[(1, 20613340), (2, 10306670), (4, 5153335), (5, 4122668), (10, 2061334), (11, 1873940), (20, 1030667), (22, 936970), (43, 479380), (44, 468485), (55, 374788), (86, 239690), (110, 187394), (172, 119845), (215, 95876), (220, 93697), (430, 47938), (473, 43580), (860, 23969), (946, 21790), (1892, 10895), (2179, 9460), (2365, 8716), (4358, 4730)]