257133285

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{21893}}^1$

素因数の和:21939

約数の個数: 40

約数和(自身を含む): 476851320

約数和(自身を除く): 219718035

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 2349, 3915, 11745, 21893, 65679, 109465, 197037, 328395, 591111, 634897, 985185, 1773333, 1904691, 2955555, 3174485, 5714073, 8866665, 9523455, 17142219, 28570365, 51426657, 85711095, 257133285]

約数ペア:

[(1, 257133285), (3, 85711095), (5, 51426657), (9, 28570365), (15, 17142219), (27, 9523455), (29, 8866665), (45, 5714073), (81, 3174485), (87, 2955555), (135, 1904691), (145, 1773333), (261, 985185), (405, 634897), (435, 591111), (783, 328395), (1305, 197037), (2349, 109465), (3915, 65679), (11745, 21893)]