197257977

素因数分解:

$3^3\times 7^2\times {\mathrm{149099}}^1$

素因数の和:149122

約数の個数: 24

約数和(自身を含む): 339948000

約数和(自身を除く): 142690023

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 149099, 447297, 1043693, 1341891, 3131079, 4025673, 7305851, 9393237, 21917553, 28179711, 65752659, 197257977]

約数ペア:

[(1, 197257977), (3, 65752659), (7, 28179711), (9, 21917553), (21, 9393237), (27, 7305851), (49, 4025673), (63, 3131079), (147, 1341891), (189, 1043693), (441, 447297), (1323, 149099)]