18880605

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 15264675

約数列:

[1, 3, 5, 9, 15, 45, 47, 79, 113, 141, 235, 237, 339, 395, 423, 565, 705, 711, 1017, 1185, 1695, 2115, 3555, 3713, 5085, 5311, 8927, 11139, 15933, 18565, 26555, 26781, 33417, 44635, 47799, 55695, 79665, 80343, 133905, 167085, 238995, 401715, 419569, 1258707, 2097845, 3776121, 6293535, 18880605]

約数ペア:

[(1, 18880605), (3, 6293535), (5, 3776121), (9, 2097845), (15, 1258707), (45, 419569), (47, 401715), (79, 238995), (113, 167085), (141, 133905), (235, 80343), (237, 79665), (339, 55695), (395, 47799), (423, 44635), (565, 33417), (705, 26781), (711, 26555), (1017, 18565), (1185, 15933), (1695, 11139), (2115, 8927), (3555, 5311), (3713, 5085)]