278996211

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{27409}}^1$

素因数の和:27460

約数の個数: 32

約数和(自身を含む): 460488000

約数和(自身を除く): 181491789

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 261, 351, 377, 783, 1131, 3393, 10179, 27409, 82227, 246681, 356317, 740043, 794861, 1068951, 2384583, 3206853, 7153749, 9620559, 10333193, 21461247, 30999579, 92998737, 278996211]

約数ペア:

[(1, 278996211), (3, 92998737), (9, 30999579), (13, 21461247), (27, 10333193), (29, 9620559), (39, 7153749), (87, 3206853), (117, 2384583), (261, 1068951), (351, 794861), (377, 740043), (783, 356317), (1131, 246681), (3393, 82227), (10179, 27409)]