81172605

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1\times {\mathrm{397}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 133651584

約数和(自身を除く): 52478979

約数列:

[1, 3, 5, 15, 43, 129, 215, 317, 397, 645, 951, 1191, 1585, 1985, 4755, 5955, 13631, 17071, 40893, 51213, 68155, 85355, 125849, 204465, 256065, 377547, 629245, 1887735, 5411507, 16234521, 27057535, 81172605]

約数ペア:

[(1, 81172605), (3, 27057535), (5, 16234521), (15, 5411507), (43, 1887735), (129, 629245), (215, 377547), (317, 256065), (397, 204465), (645, 125849), (951, 85355), (1191, 68155), (1585, 51213), (1985, 40893), (4755, 17071), (5955, 13631)]