20818188290

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2999}}^1\times {\mathrm{16931}}^1$

素因数の和:19978

約数の個数: 32

約数和(自身を含む): 38401776000

約数和(自身を除く): 17583587710

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 2999, 5998, 14995, 16931, 29990, 33862, 84655, 122959, 169310, 245918, 614795, 694171, 1229590, 1388342, 3470855, 6941710, 50776069, 101552138, 253880345, 507760690, 2081818829, 4163637658, 10409094145, 20818188290]

約数ペア:

[(1, 20818188290), (2, 10409094145), (5, 4163637658), (10, 2081818829), (41, 507760690), (82, 253880345), (205, 101552138), (410, 50776069), (2999, 6941710), (5998, 3470855), (14995, 1388342), (16931, 1229590), (29990, 694171), (33862, 614795), (84655, 245918), (122959, 169310)]