2157265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 2874816

約数和(自身を除く): 717551

約数列:

[1, 5, 11, 55, 61, 305, 643, 671, 3215, 3355, 7073, 35365, 39223, 196115, 431453, 2157265]

約数ペア:

[(1, 2157265), (5, 431453), (11, 196115), (55, 39223), (61, 35365), (305, 7073), (643, 3355), (671, 3215)]