131490890

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^2\times {\mathrm{1289}}^1$

素因数の和:1498

約数の個数: 24

約数和(自身を含む): 239235660

約数和(自身を除く): 107744770

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 1289, 2578, 6445, 10201, 12890, 20402, 51005, 102010, 130189, 260378, 650945, 1301890, 13149089, 26298178, 65745445, 131490890]

約数ペア:

[(1, 131490890), (2, 65745445), (5, 26298178), (10, 13149089), (101, 1301890), (202, 650945), (505, 260378), (1010, 130189), (1289, 102010), (2578, 51005), (6445, 20402), (10201, 12890)]