18677920

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1091}}^1$

素因数の和:1213

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 25901888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1091, 1712, 2140, 2182, 3424, 4280, 4364, 5455, 8560, 8728, 10910, 17120, 17456, 21820, 34912, 43640, 87280, 116737, 174560, 233474, 466948, 583685, 933896, 1167370, 1867792, 2334740, 3735584, 4669480, 9338960, 18677920]

約数ペア:

[(1, 18677920), (2, 9338960), (4, 4669480), (5, 3735584), (8, 2334740), (10, 1867792), (16, 1167370), (20, 933896), (32, 583685), (40, 466948), (80, 233474), (107, 174560), (160, 116737), (214, 87280), (428, 43640), (535, 34912), (856, 21820), (1070, 17456), (1091, 17120), (1712, 10910), (2140, 8728), (2182, 8560), (3424, 5455), (4280, 4364)]