18860391

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 13314969

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 99, 121, 207, 251, 253, 297, 363, 621, 753, 759, 1089, 2259, 2277, 2761, 2783, 3267, 5773, 6777, 6831, 8283, 8349, 17319, 24849, 25047, 30371, 51957, 63503, 74547, 75141, 91113, 155871, 190509, 273339, 571527, 698533, 820017, 1714581, 2095599, 6286797, 18860391]

約数ペア:

[(1, 18860391), (3, 6286797), (9, 2095599), (11, 1714581), (23, 820017), (27, 698533), (33, 571527), (69, 273339), (99, 190509), (121, 155871), (207, 91113), (251, 75141), (253, 74547), (297, 63503), (363, 51957), (621, 30371), (753, 25047), (759, 24849), (1089, 17319), (2259, 8349), (2277, 8283), (2761, 6831), (2783, 6777), (3267, 5773)]