18973647

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 36516480

約数和(自身を除く): 17542833

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 57, 63, 77, 99, 121, 131, 133, 171, 209, 231, 363, 393, 399, 627, 693, 847, 917, 1089, 1179, 1197, 1441, 1463, 1881, 2299, 2489, 2541, 2751, 4323, 4389, 6897, 7467, 7623, 8253, 10087, 12969, 13167, 15851, 16093, 17423, 20691, 22401, 27379, 30261, 47553, 48279, 52269, 82137, 90783, 110957, 142659, 144837, 156807, 191653, 246411, 301169, 332871, 574959, 903507, 998613, 1724877, 2108183, 2710521, 6324549, 18973647]

約数ペア:

[(1, 18973647), (3, 6324549), (7, 2710521), (9, 2108183), (11, 1724877), (19, 998613), (21, 903507), (33, 574959), (57, 332871), (63, 301169), (77, 246411), (99, 191653), (121, 156807), (131, 144837), (133, 142659), (171, 110957), (209, 90783), (231, 82137), (363, 52269), (393, 48279), (399, 47553), (627, 30261), (693, 27379), (847, 22401), (917, 20691), (1089, 17423), (1179, 16093), (1197, 15851), (1441, 13167), (1463, 12969), (1881, 10087), (2299, 8253), (2489, 7623), (2541, 7467), (2751, 6897), (4323, 4389)]