20379420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2633}}^1$

素因数の和:2691

約数の個数: 72

約数和(自身を含む): 63279216

約数和(自身を除く): 42899796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2633, 3870, 5266, 7740, 7899, 10532, 13165, 15798, 23697, 26330, 31596, 39495, 47394, 52660, 78990, 94788, 113219, 118485, 157980, 226438, 236970, 339657, 452876, 473940, 566095, 679314, 1018971, 1132190, 1358628, 1698285, 2037942, 2264380, 3396570, 4075884, 5094855, 6793140, 10189710, 20379420]

約数ペア:

[(1, 20379420), (2, 10189710), (3, 6793140), (4, 5094855), (5, 4075884), (6, 3396570), (9, 2264380), (10, 2037942), (12, 1698285), (15, 1358628), (18, 1132190), (20, 1018971), (30, 679314), (36, 566095), (43, 473940), (45, 452876), (60, 339657), (86, 236970), (90, 226438), (129, 157980), (172, 118485), (180, 113219), (215, 94788), (258, 78990), (387, 52660), (430, 47394), (516, 39495), (645, 31596), (774, 26330), (860, 23697), (1290, 15798), (1548, 13165), (1935, 10532), (2580, 7899), (2633, 7740), (3870, 5266)]