18912140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72739}}^1$

素因数の和:72761

約数の個数: 24

約数和(自身を含む): 42771120

約数和(自身を除く): 23858980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72739, 145478, 290956, 363695, 727390, 945607, 1454780, 1891214, 3782428, 4728035, 9456070, 18912140]

約数ペア:

[(1, 18912140), (2, 9456070), (4, 4728035), (5, 3782428), (10, 1891214), (13, 1454780), (20, 945607), (26, 727390), (52, 363695), (65, 290956), (130, 145478), (260, 72739)]