83680040

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2111}}^1$

素因数の和:3113

約数の個数: 32

約数和(自身を含む): 188559360

約数和(自身を除く): 104879320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 2111, 3964, 4222, 4955, 7928, 8444, 9910, 10555, 16888, 19820, 21110, 39640, 42220, 84440, 2092001, 4184002, 8368004, 10460005, 16736008, 20920010, 41840020, 83680040]

約数ペア:

[(1, 83680040), (2, 41840020), (4, 20920010), (5, 16736008), (8, 10460005), (10, 8368004), (20, 4184002), (40, 2092001), (991, 84440), (1982, 42220), (2111, 39640), (3964, 21110), (4222, 19820), (4955, 16888), (7928, 10555), (8444, 9910)]