638102020

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{117731}}^1$

素因数の和:118011

約数の個数: 24

約数和(自身を含む): 1344970368

約数和(自身を除く): 706868348

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5420, 117731, 235462, 470924, 588655, 1177310, 2354620, 31905101, 63810202, 127620404, 159525505, 319051010, 638102020]

約数ペア:

[(1, 638102020), (2, 319051010), (4, 159525505), (5, 127620404), (10, 63810202), (20, 31905101), (271, 2354620), (542, 1177310), (1084, 588655), (1355, 470924), (2710, 235462), (5420, 117731)]