213967580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{345109}}^1$

素因数の和:345149

約数の個数: 24

約数和(自身を含む): 463827840

約数和(自身を除く): 249860260

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 345109, 690218, 1380436, 1725545, 3451090, 6902180, 10698379, 21396758, 42793516, 53491895, 106983790, 213967580]

約数ペア:

[(1, 213967580), (2, 106983790), (4, 53491895), (5, 42793516), (10, 21396758), (20, 10698379), (31, 6902180), (62, 3451090), (124, 1725545), (155, 1380436), (310, 690218), (620, 345109)]