18210980

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{1471}}^1$

素因数の和:2099

約数の個数: 24

約数和(自身を含む): 38330880

約数和(自身を除く): 20119900

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 1471, 2476, 2942, 3095, 5884, 6190, 7355, 12380, 14710, 29420, 910549, 1821098, 3642196, 4552745, 9105490, 18210980]

約数ペア:

[(1, 18210980), (2, 9105490), (4, 4552745), (5, 3642196), (10, 1821098), (20, 910549), (619, 29420), (1238, 14710), (1471, 12380), (2476, 7355), (2942, 6190), (3095, 5884)]