646340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1901}}^1$

素因数の和:1927

約数の個数: 24

約数和(自身を含む): 1437912

約数和(自身を除く): 791572

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1901, 3802, 7604, 9505, 19010, 32317, 38020, 64634, 129268, 161585, 323170, 646340]

約数ペア:

[(1, 646340), (2, 323170), (4, 161585), (5, 129268), (10, 64634), (17, 38020), (20, 32317), (34, 19010), (68, 9505), (85, 7604), (170, 3802), (340, 1901)]