21611793

素因数分解:

$3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1861}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 33962880

約数和(自身を除く): 12351087

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 553, 1659, 1861, 3871, 5583, 11613, 13027, 39081, 91189, 147019, 273567, 441057, 1029133, 3087399, 7203931, 21611793]

約数ペア:

[(1, 21611793), (3, 7203931), (7, 3087399), (21, 1029133), (49, 441057), (79, 273567), (147, 147019), (237, 91189), (553, 39081), (1659, 13027), (1861, 11613), (3871, 5583)]