208891004

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{72431}}^1$

素因数の和:72545

約数の個数: 24

約数和(自身を含む): 421843968

約数和(自身を除く): 212952964

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 72431, 144862, 289724, 507017, 1014034, 2028068, 7460393, 14920786, 29841572, 52222751, 104445502, 208891004]

約数ペア:

[(1, 208891004), (2, 104445502), (4, 52222751), (7, 29841572), (14, 14920786), (28, 7460393), (103, 2028068), (206, 1014034), (412, 507017), (721, 289724), (1442, 144862), (2884, 72431)]