21300123

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{509}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 32558400

約数和(自身を除く): 11258277

約数列:

[1, 3, 13, 29, 37, 39, 87, 111, 377, 481, 509, 1073, 1131, 1443, 1527, 3219, 6617, 13949, 14761, 18833, 19851, 41847, 44283, 56499, 191893, 244829, 546157, 575679, 734487, 1638471, 7100041, 21300123]

約数ペア:

[(1, 21300123), (3, 7100041), (13, 1638471), (29, 734487), (37, 575679), (39, 546157), (87, 244829), (111, 191893), (377, 56499), (481, 44283), (509, 41847), (1073, 19851), (1131, 18833), (1443, 14761), (1527, 13949), (3219, 6617)]