21778796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{853}}^1$

素因数の和:1361

約数の個数: 24

約数和(自身を含む): 41176464

約数和(自身を除く): 19397668

約数列:

[1, 2, 4, 13, 26, 52, 491, 853, 982, 1706, 1964, 3412, 6383, 11089, 12766, 22178, 25532, 44356, 418823, 837646, 1675292, 5444699, 10889398, 21778796]

約数ペア:

[(1, 21778796), (2, 10889398), (4, 5444699), (13, 1675292), (26, 837646), (52, 418823), (491, 44356), (853, 25532), (982, 22178), (1706, 12766), (1964, 11089), (3412, 6383)]