81501165

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 155127960

約数和(自身を除く): 73626795

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 173, 261, 285, 361, 435, 519, 551, 855, 865, 1083, 1305, 1557, 1653, 1805, 2595, 2755, 3249, 3287, 4959, 5017, 5415, 7785, 8265, 9861, 10469, 15051, 16245, 16435, 24795, 25085, 29583, 31407, 45153, 49305, 52345, 62453, 75255, 94221, 95323, 147915, 157035, 187359, 225765, 285969, 312265, 471105, 476615, 562077, 857907, 936795, 1429845, 1811137, 2810385, 4289535, 5433411, 9055685, 16300233, 27167055, 81501165]

約数ペア:

[(1, 81501165), (3, 27167055), (5, 16300233), (9, 9055685), (15, 5433411), (19, 4289535), (29, 2810385), (45, 1811137), (57, 1429845), (87, 936795), (95, 857907), (145, 562077), (171, 476615), (173, 471105), (261, 312265), (285, 285969), (361, 225765), (435, 187359), (519, 157035), (551, 147915), (855, 95323), (865, 94221), (1083, 75255), (1305, 62453), (1557, 52345), (1653, 49305), (1805, 45153), (2595, 31407), (2755, 29583), (3249, 25085), (3287, 24795), (4959, 16435), (5017, 16245), (5415, 15051), (7785, 10469), (8265, 9861)]