31049240

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1801}}^1$

素因数の和:2243

約数の個数: 32

約数和(自身を含む): 70061760

約数和(自身を除く): 39012520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 1801, 2155, 3448, 3602, 4310, 7204, 8620, 9005, 14408, 17240, 18010, 36020, 72040, 776231, 1552462, 3104924, 3881155, 6209848, 7762310, 15524620, 31049240]

約数ペア:

[(1, 31049240), (2, 15524620), (4, 7762310), (5, 6209848), (8, 3881155), (10, 3104924), (20, 1552462), (40, 776231), (431, 72040), (862, 36020), (1724, 18010), (1801, 17240), (2155, 14408), (3448, 9005), (3602, 8620), (4310, 7204)]