21598980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27691}}^1$

素因数の和:27716

約数の個数: 48

約数和(自身を含む): 65131584

約数和(自身を除く): 43532604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27691, 55382, 83073, 110764, 138455, 166146, 276910, 332292, 359983, 415365, 553820, 719966, 830730, 1079949, 1439932, 1661460, 1799915, 2159898, 3599830, 4319796, 5399745, 7199660, 10799490, 21598980]

約数ペア:

[(1, 21598980), (2, 10799490), (3, 7199660), (4, 5399745), (5, 4319796), (6, 3599830), (10, 2159898), (12, 1799915), (13, 1661460), (15, 1439932), (20, 1079949), (26, 830730), (30, 719966), (39, 553820), (52, 415365), (60, 359983), (65, 332292), (78, 276910), (130, 166146), (156, 138455), (195, 110764), (260, 83073), (390, 55382), (780, 27691)]