81851427

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 141972480

約数和(自身を除く): 60121053

約数列:

[1, 3, 7, 9, 21, 29, 63, 71, 87, 203, 213, 261, 497, 609, 631, 639, 1491, 1827, 1893, 2059, 4417, 4473, 5679, 6177, 13251, 14413, 18299, 18531, 39753, 43239, 44801, 54897, 128093, 129717, 134403, 164691, 313607, 384279, 403209, 940821, 1152837, 1299229, 2822463, 3897687, 9094603, 11693061, 27283809, 81851427]

約数ペア:

[(1, 81851427), (3, 27283809), (7, 11693061), (9, 9094603), (21, 3897687), (29, 2822463), (63, 1299229), (71, 1152837), (87, 940821), (203, 403209), (213, 384279), (261, 313607), (497, 164691), (609, 134403), (631, 129717), (639, 128093), (1491, 54897), (1827, 44801), (1893, 43239), (2059, 39753), (4417, 18531), (4473, 18299), (5679, 14413), (6177, 13251)]