20787205

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{3271}}^1$

素因数の和:3348

約数の個数: 16

約数和(自身を含む): 26385408

約数和(自身を除く): 5598203

約数列:

[1, 5, 31, 41, 155, 205, 1271, 3271, 6355, 16355, 101401, 134111, 507005, 670555, 4157441, 20787205]

約数ペア:

[(1, 20787205), (5, 4157441), (31, 670555), (41, 507005), (155, 134111), (205, 101401), (1271, 16355), (3271, 6355)]