30128920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{4621}}^1$

素因数の和:4795

約数の個数: 32

約数和(自身を含む): 68220720

約数和(自身を除く): 38091800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 4621, 6520, 9242, 18484, 23105, 36968, 46210, 92420, 184840, 753223, 1506446, 3012892, 3766115, 6025784, 7532230, 15064460, 30128920]

約数ペア:

[(1, 30128920), (2, 15064460), (4, 7532230), (5, 6025784), (8, 3766115), (10, 3012892), (20, 1506446), (40, 753223), (163, 184840), (326, 92420), (652, 46210), (815, 36968), (1304, 23105), (1630, 18484), (3260, 9242), (4621, 6520)]