521504139

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1\times {\mathrm{907}}^1$

素因数の和:1587

約数の個数: 32

約数和(自身を含む): 783465984

約数和(自身を除く): 261961845

約数列:

[1, 3, 13, 23, 39, 69, 299, 641, 897, 907, 1923, 2721, 8333, 11791, 14743, 20861, 24999, 35373, 44229, 62583, 191659, 271193, 574977, 581387, 813579, 1744161, 7558031, 13371901, 22674093, 40115703, 173834713, 521504139]

約数ペア:

[(1, 521504139), (3, 173834713), (13, 40115703), (23, 22674093), (39, 13371901), (69, 7558031), (299, 1744161), (641, 813579), (897, 581387), (907, 574977), (1923, 271193), (2721, 191659), (8333, 62583), (11791, 44229), (14743, 35373), (20861, 24999)]