21078925

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5237}}^1$

素因数の和:5277

約数の個数: 24

約数和(自身を含む): 31176576

約数和(自身を除く): 10097651

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5237, 26185, 36659, 120451, 130925, 183295, 602255, 843157, 916475, 3011275, 4215785, 21078925]

約数ペア:

[(1, 21078925), (5, 4215785), (7, 3011275), (23, 916475), (25, 843157), (35, 602255), (115, 183295), (161, 130925), (175, 120451), (575, 36659), (805, 26185), (4025, 5237)]