2019908980

素因数分解:

$2^2\times 5^1\times {\mathrm{4951}}^1\times {\mathrm{20399}}^1$

素因数の和:25359

約数の個数: 24

約数和(自身を含む): 4242873600

約数和(自身を除く): 2222964620

約数列:

[1, 2, 4, 5, 10, 20, 4951, 9902, 19804, 20399, 24755, 40798, 49510, 81596, 99020, 101995, 203990, 407980, 100995449, 201990898, 403981796, 504977245, 1009954490, 2019908980]

約数ペア:

[(1, 2019908980), (2, 1009954490), (4, 504977245), (5, 403981796), (10, 201990898), (20, 100995449), (4951, 407980), (9902, 203990), (19804, 101995), (20399, 99020), (24755, 81596), (40798, 49510)]