21029553

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 31660200

約数和(自身を除く): 10630647

約数列:

[1, 3, 9, 29, 87, 197, 261, 409, 591, 1227, 1773, 3681, 5713, 11861, 17139, 35583, 51417, 80573, 106749, 241719, 725157, 2336617, 7009851, 21029553]

約数ペア:

[(1, 21029553), (3, 7009851), (9, 2336617), (29, 725157), (87, 241719), (197, 106749), (261, 80573), (409, 51417), (591, 35583), (1227, 17139), (1773, 11861), (3681, 5713)]