20733860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21157}}^1$

素因数の和:21180

約数の個数: 36

約数和(自身を含む): 50652252

約数和(自身を除く): 29918392

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21157, 42314, 84628, 105785, 148099, 211570, 296198, 423140, 592396, 740495, 1036693, 1480990, 2073386, 2961980, 4146772, 5183465, 10366930, 20733860]

約数ペア:

[(1, 20733860), (2, 10366930), (4, 5183465), (5, 4146772), (7, 2961980), (10, 2073386), (14, 1480990), (20, 1036693), (28, 740495), (35, 592396), (49, 423140), (70, 296198), (98, 211570), (140, 148099), (196, 105785), (245, 84628), (490, 42314), (980, 21157)]