68718640

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1993}}^1$

素因数の和:2437

約数の個数: 40

約数和(自身を含む): 160221888

約数和(自身を除く): 91503248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 1724, 1993, 2155, 3448, 3986, 4310, 6896, 7972, 8620, 9965, 15944, 17240, 19930, 31888, 34480, 39860, 79720, 159440, 858983, 1717966, 3435932, 4294915, 6871864, 8589830, 13743728, 17179660, 34359320, 68718640]

約数ペア:

[(1, 68718640), (2, 34359320), (4, 17179660), (5, 13743728), (8, 8589830), (10, 6871864), (16, 4294915), (20, 3435932), (40, 1717966), (80, 858983), (431, 159440), (862, 79720), (1724, 39860), (1993, 34480), (2155, 31888), (3448, 19930), (3986, 17240), (4310, 15944), (6896, 9965), (7972, 8620)]