220745987

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{3299}}^1$

素因数の和:3407

約数の個数: 24

約数和(自身を含む): 280896000

約数和(自身を除く): 60150013

約数列:

[1, 7, 11, 77, 79, 121, 553, 847, 869, 3299, 6083, 9559, 23093, 36289, 66913, 254023, 260621, 399179, 1824347, 2794253, 2866831, 20067817, 31535141, 220745987]

約数ペア:

[(1, 220745987), (7, 31535141), (11, 20067817), (77, 2866831), (79, 2794253), (121, 1824347), (553, 399179), (847, 260621), (869, 254023), (3299, 66913), (6083, 36289), (9559, 23093)]