25490647

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:703

約数の個数: 32

約数和(自身を含む): 34513920

約数和(自身を除く): 9023273

約数列:

[1, 7, 13, 19, 23, 91, 133, 161, 247, 299, 437, 641, 1729, 2093, 3059, 4487, 5681, 8333, 12179, 14743, 39767, 58331, 85253, 103201, 158327, 191659, 280117, 1108289, 1341613, 1960819, 3641521, 25490647]

約数ペア:

[(1, 25490647), (7, 3641521), (13, 1960819), (19, 1341613), (23, 1108289), (91, 280117), (133, 191659), (161, 158327), (247, 103201), (299, 85253), (437, 58331), (641, 39767), (1729, 14743), (2093, 12179), (3059, 8333), (4487, 5681)]