20663510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1811}}^1$

素因数の和:1988

約数の個数: 32

約数和(自身を含む): 42792192

約数和(自身を除く): 22128682

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 163, 326, 815, 1141, 1630, 1811, 2282, 3622, 5705, 9055, 11410, 12677, 18110, 25354, 63385, 126770, 295193, 590386, 1475965, 2066351, 2951930, 4132702, 10331755, 20663510]

約数ペア:

[(1, 20663510), (2, 10331755), (5, 4132702), (7, 2951930), (10, 2066351), (14, 1475965), (35, 590386), (70, 295193), (163, 126770), (326, 63385), (815, 25354), (1141, 18110), (1630, 12677), (1811, 11410), (2282, 9055), (3622, 5705)]