15489980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 35773920

約数和(自身を除く): 20283940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 389, 724, 778, 905, 1556, 1810, 1945, 1991, 3620, 3890, 3982, 4279, 7780, 7964, 8558, 9955, 17116, 19910, 21395, 39820, 42790, 70409, 85580, 140818, 281636, 352045, 704090, 774499, 1408180, 1548998, 3097996, 3872495, 7744990, 15489980]

約数ペア:

[(1, 15489980), (2, 7744990), (4, 3872495), (5, 3097996), (10, 1548998), (11, 1408180), (20, 774499), (22, 704090), (44, 352045), (55, 281636), (110, 140818), (181, 85580), (220, 70409), (362, 42790), (389, 39820), (724, 21395), (778, 19910), (905, 17116), (1556, 9955), (1810, 8558), (1945, 7964), (1991, 7780), (3620, 4279), (3890, 3982)]