31392520

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1409}}^1$

素因数の和:1977

約数の個数: 32

約数和(自身を含む): 70810200

約数和(自身を除く): 39417680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 1409, 2228, 2785, 2818, 4456, 5570, 5636, 7045, 11140, 11272, 14090, 22280, 28180, 56360, 784813, 1569626, 3139252, 3924065, 6278504, 7848130, 15696260, 31392520]

約数ペア:

[(1, 31392520), (2, 15696260), (4, 7848130), (5, 6278504), (8, 3924065), (10, 3139252), (20, 1569626), (40, 784813), (557, 56360), (1114, 28180), (1409, 22280), (2228, 14090), (2785, 11272), (2818, 11140), (4456, 7045), (5570, 5636)]