261929913

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{2801}}^1$

素因数の和:2945

約数の個数: 32

約数和(自身を含む): 411378432

約数和(自身を除く): 149448519

約数列:

[1, 3, 7, 21, 61, 73, 183, 219, 427, 511, 1281, 1533, 2801, 4453, 8403, 13359, 19607, 31171, 58821, 93513, 170861, 204473, 512583, 613419, 1196027, 1431311, 3588081, 4293933, 12472853, 37418559, 87309971, 261929913]

約数ペア:

[(1, 261929913), (3, 87309971), (7, 37418559), (21, 12472853), (61, 4293933), (73, 3588081), (183, 1431311), (219, 1196027), (427, 613419), (511, 512583), (1281, 204473), (1533, 170861), (2801, 93513), (4453, 58821), (8403, 31171), (13359, 19607)]