128821460

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{63773}}^1$

素因数の和:63883

約数の個数: 24

約数和(自身を含む): 273207816

約数和(自身を除く): 144386356

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 63773, 127546, 255092, 318865, 637730, 1275460, 6441073, 12882146, 25764292, 32205365, 64410730, 128821460]

約数ペア:

[(1, 128821460), (2, 64410730), (4, 32205365), (5, 25764292), (10, 12882146), (20, 6441073), (101, 1275460), (202, 637730), (404, 318865), (505, 255092), (1010, 127546), (2020, 63773)]