72516860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278911}}^1$

素因数の和:278933

約数の個数: 24

約数和(自身を含む): 164000256

約数和(自身を除く): 91483396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 278911, 557822, 1115644, 1394555, 2789110, 3625843, 5578220, 7251686, 14503372, 18129215, 36258430, 72516860]

約数ペア:

[(1, 72516860), (2, 36258430), (4, 18129215), (5, 14503372), (10, 7251686), (13, 5578220), (20, 3625843), (26, 2789110), (52, 1394555), (65, 1115644), (130, 557822), (260, 278911)]