129994540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499979}}^1$

素因数の和:500001

約数の個数: 24

約数和(自身を含む): 293988240

約数和(自身を除く): 163993700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 499979, 999958, 1999916, 2499895, 4999790, 6499727, 9999580, 12999454, 25998908, 32498635, 64997270, 129994540]

約数ペア:

[(1, 129994540), (2, 64997270), (4, 32498635), (5, 25998908), (10, 12999454), (13, 9999580), (20, 6499727), (26, 4999790), (52, 2499895), (65, 1999916), (130, 999958), (260, 499979)]