21237008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102101}}^1$

素因数の和:102122

約数の個数: 20

約数和(自身を含む): 44312268

約数和(自身を除く): 23075260

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102101, 204202, 408404, 816808, 1327313, 1633616, 2654626, 5309252, 10618504, 21237008]

約数ペア:

[(1, 21237008), (2, 10618504), (4, 5309252), (8, 2654626), (13, 1633616), (16, 1327313), (26, 816808), (52, 408404), (104, 204202), (208, 102101)]