20871587

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{631}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 23783424

約数和(自身を除く): 2911837

約数列:

[1, 11, 31, 97, 341, 631, 1067, 3007, 6941, 19561, 33077, 61207, 215171, 673277, 1897417, 20871587]

約数ペア:

[(1, 20871587), (11, 1897417), (31, 673277), (97, 215171), (341, 61207), (631, 33077), (1067, 19561), (3007, 6941)]