18956860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72911}}^1$

素因数の和:72933

約数の個数: 24

約数和(自身を含む): 42872256

約数和(自身を除く): 23915396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72911, 145822, 291644, 364555, 729110, 947843, 1458220, 1895686, 3791372, 4739215, 9478430, 18956860]

約数ペア:

[(1, 18956860), (2, 9478430), (4, 4739215), (5, 3791372), (10, 1895686), (13, 1458220), (20, 947843), (26, 729110), (52, 364555), (65, 291644), (130, 145822), (260, 72911)]