31801240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19391}}^1$

素因数の和:19443

約数の個数: 32

約数和(自身を含む): 73301760

約数和(自身を除く): 41500520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19391, 38782, 77564, 96955, 155128, 193910, 387820, 775640, 795031, 1590062, 3180124, 3975155, 6360248, 7950310, 15900620, 31801240]

約数ペア:

[(1, 31801240), (2, 15900620), (4, 7950310), (5, 6360248), (8, 3975155), (10, 3180124), (20, 1590062), (40, 795031), (41, 775640), (82, 387820), (164, 193910), (205, 155128), (328, 96955), (410, 77564), (820, 38782), (1640, 19391)]