20457390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{681913}}^1$

素因数の和:681923

約数の個数: 16

約数和(自身を含む): 49097808

約数和(自身を除く): 28640418

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 681913, 1363826, 2045739, 3409565, 4091478, 6819130, 10228695, 20457390]

約数ペア:

[(1, 20457390), (2, 10228695), (3, 6819130), (5, 4091478), (6, 3409565), (10, 2045739), (15, 1363826), (30, 681913)]