20531730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2663}}^1$

素因数の和:2930

約数の個数: 32

約数和(自身を含む): 49486464

約数和(自身を除く): 28954734

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 257, 514, 771, 1285, 1542, 2570, 2663, 3855, 5326, 7710, 7989, 13315, 15978, 26630, 39945, 79890, 684391, 1368782, 2053173, 3421955, 4106346, 6843910, 10265865, 20531730]

約数ペア:

[(1, 20531730), (2, 10265865), (3, 6843910), (5, 4106346), (6, 3421955), (10, 2053173), (15, 1368782), (30, 684391), (257, 79890), (514, 39945), (771, 26630), (1285, 15978), (1542, 13315), (2570, 7989), (2663, 7710), (3855, 5326)]