21921805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1\times {\mathrm{607}}^1$

素因数の和:876

約数の個数: 16

約数和(自身を含む): 27316224

約数和(自身を除く): 5394419

約数列:

[1, 5, 31, 155, 233, 607, 1165, 3035, 7223, 18817, 36115, 94085, 141431, 707155, 4384361, 21921805]

約数ペア:

[(1, 21921805), (5, 4384361), (31, 707155), (155, 141431), (233, 94085), (607, 36115), (1165, 18817), (3035, 7223)]