178145721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 285405120

約数和(自身を除く): 107259399

約数列:

[1, 3, 9, 13, 39, 59, 117, 131, 177, 197, 393, 531, 591, 767, 1179, 1703, 1773, 2301, 2561, 5109, 6903, 7683, 7729, 11623, 15327, 23049, 23187, 25807, 34869, 69561, 77421, 100477, 104607, 151099, 232263, 301431, 335491, 453297, 904293, 1006473, 1359891, 1522613, 3019419, 4567839, 13703517, 19793969, 59381907, 178145721]

約数ペア:

[(1, 178145721), (3, 59381907), (9, 19793969), (13, 13703517), (39, 4567839), (59, 3019419), (117, 1522613), (131, 1359891), (177, 1006473), (197, 904293), (393, 453297), (531, 335491), (591, 301431), (767, 232263), (1179, 151099), (1703, 104607), (1773, 100477), (2301, 77421), (2561, 69561), (5109, 34869), (6903, 25807), (7683, 23187), (7729, 23049), (11623, 15327)]