21049041

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11126319

約数列:

[1, 3, 13, 29, 37, 39, 87, 111, 377, 481, 503, 1073, 1131, 1443, 1509, 3219, 6539, 13949, 14587, 18611, 19617, 41847, 43761, 55833, 189631, 241943, 539719, 568893, 725829, 1619157, 7016347, 21049041]

約数ペア:

[(1, 21049041), (3, 7016347), (13, 1619157), (29, 725829), (37, 568893), (39, 539719), (87, 241943), (111, 189631), (377, 55833), (481, 43761), (503, 41847), (1073, 19617), (1131, 18611), (1443, 14587), (1509, 13949), (3219, 6539)]