20606840

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1901}}^1$

素因数の和:2183

約数の個数: 32

約数和(自身を含む): 46560960

約数和(自身を除く): 25954120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 1901, 2168, 2710, 3802, 5420, 7604, 9505, 10840, 15208, 19010, 38020, 76040, 515171, 1030342, 2060684, 2575855, 4121368, 5151710, 10303420, 20606840]

約数ペア:

[(1, 20606840), (2, 10303420), (4, 5151710), (5, 4121368), (8, 2575855), (10, 2060684), (20, 1030342), (40, 515171), (271, 76040), (542, 38020), (1084, 19010), (1355, 15208), (1901, 10840), (2168, 9505), (2710, 7604), (3802, 5420)]