40864040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20849}}^1$

素因数の和:20874

約数の個数: 48

約数和(自身を含む): 106960500

約数和(自身を除く): 66096460

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20849, 41698, 83396, 104245, 145943, 166792, 208490, 291886, 416980, 583772, 729715, 833960, 1021601, 1167544, 1459430, 2043202, 2918860, 4086404, 5108005, 5837720, 8172808, 10216010, 20432020, 40864040]

約数ペア:

[(1, 40864040), (2, 20432020), (4, 10216010), (5, 8172808), (7, 5837720), (8, 5108005), (10, 4086404), (14, 2918860), (20, 2043202), (28, 1459430), (35, 1167544), (40, 1021601), (49, 833960), (56, 729715), (70, 583772), (98, 416980), (140, 291886), (196, 208490), (245, 166792), (280, 145943), (392, 104245), (490, 83396), (980, 41698), (1960, 20849)]