21010431

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{397}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 32094720

約数和(自身を除く): 11084289

約数列:

[1, 3, 13, 23, 39, 59, 69, 177, 299, 397, 767, 897, 1191, 1357, 2301, 4071, 5161, 9131, 15483, 17641, 23423, 27393, 52923, 70269, 118703, 304499, 356109, 538729, 913497, 1616187, 7003477, 21010431]

約数ペア:

[(1, 21010431), (3, 7003477), (13, 1616187), (23, 913497), (39, 538729), (59, 356109), (69, 304499), (177, 118703), (299, 70269), (397, 52923), (767, 27393), (897, 23423), (1191, 17641), (1357, 15483), (2301, 9131), (4071, 5161)]