20405750

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{2633}}^1$

素因数の和:2681

約数の個数: 32

約数和(自身を含む): 39446784

約数和(自身を除く): 19041034

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 775, 1550, 2633, 3875, 5266, 7750, 13165, 26330, 65825, 81623, 131650, 163246, 329125, 408115, 658250, 816230, 2040575, 4081150, 10202875, 20405750]

約数ペア:

[(1, 20405750), (2, 10202875), (5, 4081150), (10, 2040575), (25, 816230), (31, 658250), (50, 408115), (62, 329125), (125, 163246), (155, 131650), (250, 81623), (310, 65825), (775, 26330), (1550, 13165), (2633, 7750), (3875, 5266)]