12805821

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 22364160

約数和(自身を除く): 9558339

約数列:

[1, 3, 7, 9, 21, 31, 63, 79, 83, 93, 217, 237, 249, 279, 553, 581, 651, 711, 747, 1659, 1743, 1953, 2449, 2573, 4977, 5229, 6557, 7347, 7719, 17143, 18011, 19671, 22041, 23157, 45899, 51429, 54033, 59013, 137697, 154287, 162099, 203267, 413091, 609801, 1422869, 1829403, 4268607, 12805821]

約数ペア:

[(1, 12805821), (3, 4268607), (7, 1829403), (9, 1422869), (21, 609801), (31, 413091), (63, 203267), (79, 162099), (83, 154287), (93, 137697), (217, 59013), (237, 54033), (249, 51429), (279, 45899), (553, 23157), (581, 22041), (651, 19671), (711, 18011), (747, 17143), (1659, 7719), (1743, 7347), (1953, 6557), (2449, 5229), (2573, 4977)]