21626787

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11317}}^1$

素因数の和:11347

約数の個数: 24

約数和(自身を含む): 36127056

約数和(自身を除く): 14500269

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11317, 33951, 79219, 147121, 237657, 441363, 554533, 1029847, 1663599, 3089541, 7208929, 21626787]

約数ペア:

[(1, 21626787), (3, 7208929), (7, 3089541), (13, 1663599), (21, 1029847), (39, 554533), (49, 441363), (91, 237657), (147, 147121), (273, 79219), (637, 33951), (1911, 11317)]