31218980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{719}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 71124480

約数和(自身を除く): 39905500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 167, 260, 334, 668, 719, 835, 1438, 1670, 2171, 2876, 3340, 3595, 4342, 7190, 8684, 9347, 10855, 14380, 18694, 21710, 37388, 43420, 46735, 93470, 120073, 186940, 240146, 480292, 600365, 1200730, 1560949, 2401460, 3121898, 6243796, 7804745, 15609490, 31218980]

約数ペア:

[(1, 31218980), (2, 15609490), (4, 7804745), (5, 6243796), (10, 3121898), (13, 2401460), (20, 1560949), (26, 1200730), (52, 600365), (65, 480292), (130, 240146), (167, 186940), (260, 120073), (334, 93470), (668, 46735), (719, 43420), (835, 37388), (1438, 21710), (1670, 18694), (2171, 14380), (2876, 10855), (3340, 9347), (3595, 8684), (4342, 7190)]