8161720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 21265920

約数和(自身を除く): 13104200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 283, 412, 515, 566, 721, 824, 1030, 1132, 1415, 1442, 1981, 2060, 2264, 2830, 2884, 3605, 3962, 4120, 5660, 5768, 7210, 7924, 9905, 11320, 14420, 15848, 19810, 28840, 29149, 39620, 58298, 79240, 116596, 145745, 204043, 233192, 291490, 408086, 582980, 816172, 1020215, 1165960, 1632344, 2040430, 4080860, 8161720]

約数ペア:

[(1, 8161720), (2, 4080860), (4, 2040430), (5, 1632344), (7, 1165960), (8, 1020215), (10, 816172), (14, 582980), (20, 408086), (28, 291490), (35, 233192), (40, 204043), (56, 145745), (70, 116596), (103, 79240), (140, 58298), (206, 39620), (280, 29149), (283, 28840), (412, 19810), (515, 15848), (566, 14420), (721, 11320), (824, 9905), (1030, 7924), (1132, 7210), (1415, 5768), (1442, 5660), (1981, 4120), (2060, 3962), (2264, 3605), (2830, 2884)]