21850521

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13513}}^1$

素因数の和:13541

約数の個数: 24

約数和(自身を含む): 36974304

約数和(自身を除く): 15123783

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 13513, 40539, 94591, 148643, 283773, 445929, 662137, 1040501, 1986411, 3121503, 7283507, 21850521]

約数ペア:

[(1, 21850521), (3, 7283507), (7, 3121503), (11, 1986411), (21, 1040501), (33, 662137), (49, 445929), (77, 283773), (147, 148643), (231, 94591), (539, 40539), (1617, 13513)]