20100212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{4523}}^1$

素因数の和:4639

約数の個数: 24

約数和(自身を含む): 38761632

約数和(自身を除く): 18661420

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 404, 1111, 2222, 4444, 4523, 9046, 18092, 49753, 99506, 199012, 456823, 913646, 1827292, 5025053, 10050106, 20100212]

約数ペア:

[(1, 20100212), (2, 10050106), (4, 5025053), (11, 1827292), (22, 913646), (44, 456823), (101, 199012), (202, 99506), (404, 49753), (1111, 18092), (2222, 9046), (4444, 4523)]