21690684

素因数分解:

$2^2\times 3^2\times {\mathrm{239}}^1\times {\mathrm{2521}}^1$

素因数の和:2770

約数の個数: 36

約数和(自身を含む): 55080480

約数和(自身を除く): 33389796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 239, 478, 717, 956, 1434, 2151, 2521, 2868, 4302, 5042, 7563, 8604, 10084, 15126, 22689, 30252, 45378, 90756, 602519, 1205038, 1807557, 2410076, 3615114, 5422671, 7230228, 10845342, 21690684]

約数ペア:

[(1, 21690684), (2, 10845342), (3, 7230228), (4, 5422671), (6, 3615114), (9, 2410076), (12, 1807557), (18, 1205038), (36, 602519), (239, 90756), (478, 45378), (717, 30252), (956, 22689), (1434, 15126), (2151, 10084), (2521, 8604), (2868, 7563), (4302, 5042)]