21001676

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1745

約数の個数: 24

約数和(自身を含む): 38149440

約数和(自身を除く): 17147764

約数列:

[1, 2, 4, 41, 79, 82, 158, 164, 316, 1621, 3239, 3242, 6478, 6484, 12956, 66461, 128059, 132922, 256118, 265844, 512236, 5250419, 10500838, 21001676]

約数ペア:

[(1, 21001676), (2, 10500838), (4, 5250419), (41, 512236), (79, 265844), (82, 256118), (158, 132922), (164, 128059), (316, 66461), (1621, 12956), (3239, 6484), (3242, 6478)]