21678982

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2069}}^1$

素因数の和:2128

約数の個数: 24

約数和(自身を含む): 36365760

約数和(自身を除く): 14686778

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 2069, 4138, 5239, 10478, 26897, 53794, 64139, 128278, 349661, 699322, 833807, 1667614, 10839491, 21678982]

約数ペア:

[(1, 21678982), (2, 10839491), (13, 1667614), (26, 833807), (31, 699322), (62, 349661), (169, 128278), (338, 64139), (403, 53794), (806, 26897), (2069, 10478), (4138, 5239)]