201215440

素因数分解:

$2^4\times 5^1\times {\mathrm{2515193}}^1$

素因数の和:2515206

約数の個数: 20

約数和(自身を含む): 467826084

約数和(自身を除く): 266610644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2515193, 5030386, 10060772, 12575965, 20121544, 25151930, 40243088, 50303860, 100607720, 201215440]

約数ペア:

[(1, 201215440), (2, 100607720), (4, 50303860), (5, 40243088), (8, 25151930), (10, 20121544), (16, 12575965), (20, 10060772), (40, 5030386), (80, 2515193)]