291226257

素因数分解:

$3^2\times 7^2\times {\mathrm{660377}}^1$

素因数の和:660397

約数の個数: 18

約数和(自身を含む): 489340098

約数和(自身を除く): 198113841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 660377, 1981131, 4622639, 5943393, 13867917, 32358473, 41603751, 97075419, 291226257]

約数ペア:

[(1, 291226257), (3, 97075419), (7, 41603751), (9, 32358473), (21, 13867917), (49, 5943393), (63, 4622639), (147, 1981131), (441, 660377)]