123780015

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21323}}^1$

素因数の和:21380

約数の個数: 32

約数和(自身を含む): 225181440

約数和(自身を除く): 101401425

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 5805, 21323, 63969, 106615, 191907, 319845, 575721, 916889, 959535, 2750667, 2878605, 4584445, 8252001, 13753335, 24756003, 41260005, 123780015]

約数ペア:

[(1, 123780015), (3, 41260005), (5, 24756003), (9, 13753335), (15, 8252001), (27, 4584445), (43, 2878605), (45, 2750667), (129, 959535), (135, 916889), (215, 575721), (387, 319845), (645, 191907), (1161, 106615), (1935, 63969), (5805, 21323)]