20285240

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6947}}^1$

素因数の和:7031

約数の個数: 32

約数和(自身を含む): 46273680

約数和(自身を除く): 25988440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6947, 13894, 27788, 34735, 55576, 69470, 138940, 277880, 507131, 1014262, 2028524, 2535655, 4057048, 5071310, 10142620, 20285240]

約数ペア:

[(1, 20285240), (2, 10142620), (4, 5071310), (5, 4057048), (8, 2535655), (10, 2028524), (20, 1014262), (40, 507131), (73, 277880), (146, 138940), (292, 69470), (365, 55576), (584, 34735), (730, 27788), (1460, 13894), (2920, 6947)]