18261271

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:295

約数の個数: 24

約数和(自身を含む): 22407840

約数和(自身を除く): 4146569

約数列:

[1, 7, 29, 49, 71, 181, 203, 497, 1267, 1421, 2059, 3479, 5249, 8869, 12851, 14413, 36743, 89957, 100891, 257201, 372679, 629699, 2608753, 18261271]

約数ペア:

[(1, 18261271), (7, 2608753), (29, 629699), (49, 372679), (71, 257201), (181, 100891), (203, 89957), (497, 36743), (1267, 14413), (1421, 12851), (2059, 8869), (3479, 5249)]