20007980012

素因数分解:

$2^2\times {\mathrm{101}}^1\times {\mathrm{401}}^1\times {\mathrm{123503}}^1$

素因数の和:124009

約数の個数: 24

約数和(自身を含む): 35449106112

約数和(自身を除く): 15441126100

約数列:

[1, 2, 4, 101, 202, 401, 404, 802, 1604, 40501, 81002, 123503, 162004, 247006, 494012, 12473803, 24947606, 49524703, 49895212, 99049406, 198098812, 5001995003, 10003990006, 20007980012]

約数ペア:

[(1, 20007980012), (2, 10003990006), (4, 5001995003), (101, 198098812), (202, 99049406), (401, 49895212), (404, 49524703), (802, 24947606), (1604, 12473803), (40501, 494012), (81002, 247006), (123503, 162004)]