201219280

素因数分解:

$2^4\times 5^1\times {\mathrm{2515241}}^1$

素因数の和:2515254

約数の個数: 20

約数和(自身を含む): 467835012

約数和(自身を除く): 266615732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2515241, 5030482, 10060964, 12576205, 20121928, 25152410, 40243856, 50304820, 100609640, 201219280]

約数ペア:

[(1, 201219280), (2, 100609640), (4, 50304820), (5, 40243856), (8, 25152410), (10, 20121928), (16, 12576205), (20, 10060964), (40, 5030482), (80, 2515241)]