21307340

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15901}}^1$

素因数の和:15977

約数の個数: 24

約数和(自身を含む): 45416112

約数和(自身を除く): 24108772

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15901, 31802, 63604, 79505, 159010, 318020, 1065367, 2130734, 4261468, 5326835, 10653670, 21307340]

約数ペア:

[(1, 21307340), (2, 10653670), (4, 5326835), (5, 4261468), (10, 2130734), (20, 1065367), (67, 318020), (134, 159010), (268, 79505), (335, 63604), (670, 31802), (1340, 15901)]