68442140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263239}}^1$

素因数の和:263261

約数の個数: 24

約数和(自身を含む): 154785120

約数和(自身を除く): 86342980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 263239, 526478, 1052956, 1316195, 2632390, 3422107, 5264780, 6844214, 13688428, 17110535, 34221070, 68442140]

約数ペア:

[(1, 68442140), (2, 34221070), (4, 17110535), (5, 13688428), (10, 6844214), (13, 5264780), (20, 3422107), (26, 2632390), (52, 1316195), (65, 1052956), (130, 526478), (260, 263239)]