20421092

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{659}}^1$

素因数の和:851

約数の個数: 24

約数和(自身を含む): 36664320

約数和(自身を除く): 16243228

約数列:

[1, 2, 4, 61, 122, 127, 244, 254, 508, 659, 1318, 2636, 7747, 15494, 30988, 40199, 80398, 83693, 160796, 167386, 334772, 5105273, 10210546, 20421092]

約数ペア:

[(1, 20421092), (2, 10210546), (4, 5105273), (61, 334772), (122, 167386), (127, 160796), (244, 83693), (254, 80398), (508, 40199), (659, 30988), (1318, 15494), (2636, 7747)]