64787920

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1879}}^1$

素因数の和:2323

約数の個数: 40

約数和(自身を含む): 151061760

約数和(自身を除く): 86273840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 1724, 1879, 2155, 3448, 3758, 4310, 6896, 7516, 8620, 9395, 15032, 17240, 18790, 30064, 34480, 37580, 75160, 150320, 809849, 1619698, 3239396, 4049245, 6478792, 8098490, 12957584, 16196980, 32393960, 64787920]

約数ペア:

[(1, 64787920), (2, 32393960), (4, 16196980), (5, 12957584), (8, 8098490), (10, 6478792), (16, 4049245), (20, 3239396), (40, 1619698), (80, 809849), (431, 150320), (862, 75160), (1724, 37580), (1879, 34480), (2155, 30064), (3448, 18790), (3758, 17240), (4310, 15032), (6896, 9395), (7516, 8620)]