17378960

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1993}}^1$

素因数の和:2115

約数の個数: 40

約数和(自身を含む): 40797240

約数和(自身を除く): 23418280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 1993, 2180, 3986, 4360, 7972, 8720, 9965, 15944, 19930, 31888, 39860, 79720, 159440, 217237, 434474, 868948, 1086185, 1737896, 2172370, 3475792, 4344740, 8689480, 17378960]

約数ペア:

[(1, 17378960), (2, 8689480), (4, 4344740), (5, 3475792), (8, 2172370), (10, 1737896), (16, 1086185), (20, 868948), (40, 434474), (80, 217237), (109, 159440), (218, 79720), (436, 39860), (545, 31888), (872, 19930), (1090, 15944), (1744, 9965), (1993, 8720), (2180, 7972), (3986, 4360)]