257145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:125

約数の個数: 32

約数和(自身を含む): 491520

約数和(自身を除く): 234375

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 79, 93, 105, 155, 217, 237, 395, 465, 553, 651, 1085, 1185, 1659, 2449, 2765, 3255, 7347, 8295, 12245, 17143, 36735, 51429, 85715, 257145]

約数ペア:

[(1, 257145), (3, 85715), (5, 51429), (7, 36735), (15, 17143), (21, 12245), (31, 8295), (35, 7347), (79, 3255), (93, 2765), (105, 2449), (155, 1659), (217, 1185), (237, 1085), (395, 651), (465, 553)]