21098705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1\times {\mathrm{677}}^1$

素因数の和:976

約数の個数: 16

約数和(自身を含む): 26555904

約数和(自身を除く): 5457199

約数列:

[1, 5, 23, 115, 271, 677, 1355, 3385, 6233, 15571, 31165, 77855, 183467, 917335, 4219741, 21098705]

約数ペア:

[(1, 21098705), (5, 4219741), (23, 917335), (115, 183467), (271, 77855), (677, 31165), (1355, 15571), (3385, 6233)]