21715278

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1399}}^1$

素因数の和:1616

約数の個数: 32

約数和(自身を含む): 47040000

約数和(自身を除く): 25324722

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 199, 398, 597, 1194, 1399, 2587, 2798, 4197, 5174, 7761, 8394, 15522, 18187, 36374, 54561, 109122, 278401, 556802, 835203, 1670406, 3619213, 7238426, 10857639, 21715278]

約数ペア:

[(1, 21715278), (2, 10857639), (3, 7238426), (6, 3619213), (13, 1670406), (26, 835203), (39, 556802), (78, 278401), (199, 109122), (398, 54561), (597, 36374), (1194, 18187), (1399, 15522), (2587, 8394), (2798, 7761), (4197, 5174)]