208545813

素因数分解:

$3^3\times 7^2\times {\mathrm{283}}^1\times {\mathrm{557}}^1$

素因数の和:863

約数の個数: 48

約数和(自身を含む): 361316160

約数和(自身を除く): 152770347

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 283, 441, 557, 849, 1323, 1671, 1981, 2547, 3899, 5013, 5943, 7641, 11697, 13867, 15039, 17829, 27293, 35091, 41601, 53487, 81879, 105273, 124803, 157631, 245637, 374409, 472893, 736911, 1103417, 1418679, 3310251, 4256037, 7723919, 9930753, 23171757, 29792259, 69515271, 208545813]

約数ペア:

[(1, 208545813), (3, 69515271), (7, 29792259), (9, 23171757), (21, 9930753), (27, 7723919), (49, 4256037), (63, 3310251), (147, 1418679), (189, 1103417), (283, 736911), (441, 472893), (557, 374409), (849, 245637), (1323, 157631), (1671, 124803), (1981, 105273), (2547, 81879), (3899, 53487), (5013, 41601), (5943, 35091), (7641, 27293), (11697, 17829), (13867, 15039)]