1288270221

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{123433}}^1$

素因数の和:123521

約数の個数: 24

約数和(自身を含む): 2026292544

約数和(自身を除く): 738022323

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 3479, 10437, 123433, 370299, 864031, 2592093, 6048217, 8763743, 18144651, 26291229, 61346201, 184038603, 429423407, 1288270221]

約数ペア:

[(1, 1288270221), (3, 429423407), (7, 184038603), (21, 61346201), (49, 26291229), (71, 18144651), (147, 8763743), (213, 6048217), (497, 2592093), (1491, 864031), (3479, 370299), (10437, 123433)]