161400253

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 196466688

約数和(自身を除く): 35066435

約数列:

[1, 7, 37, 67, 71, 131, 259, 469, 497, 917, 2479, 2627, 4757, 4847, 8777, 9301, 17353, 18389, 33299, 33929, 61439, 65107, 176009, 324749, 344137, 623167, 1232063, 2273243, 2408959, 4362169, 23057179, 161400253]

約数ペア:

[(1, 161400253), (7, 23057179), (37, 4362169), (67, 2408959), (71, 2273243), (131, 1232063), (259, 623167), (469, 344137), (497, 324749), (917, 176009), (2479, 65107), (2627, 61439), (4757, 33929), (4847, 33299), (8777, 18389), (9301, 17353)]