20870910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5393}}^1$

素因数の和:5449

約数の個数: 48

約数和(自身を含む): 55536624

約数和(自身を除く): 34665714

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5393, 10786, 16179, 26965, 32358, 48537, 53930, 80895, 97074, 161790, 231899, 242685, 463798, 485370, 695697, 1159495, 1391394, 2087091, 2318990, 3478485, 4174182, 6956970, 10435455, 20870910]

約数ペア:

[(1, 20870910), (2, 10435455), (3, 6956970), (5, 4174182), (6, 3478485), (9, 2318990), (10, 2087091), (15, 1391394), (18, 1159495), (30, 695697), (43, 485370), (45, 463798), (86, 242685), (90, 231899), (129, 161790), (215, 97074), (258, 80895), (387, 53930), (430, 48537), (645, 32358), (774, 26965), (1290, 16179), (1935, 10786), (3870, 5393)]