197980479905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{19400341}}^1$

素因数の和:19400516

約数の個数: 16

約数和(自身を含む): 257481339024

約数和(自身を除く): 59500859119

約数列:

[1, 5, 13, 65, 157, 785, 2041, 10205, 19400341, 97001705, 252204433, 1261022165, 3045853537, 15229267685, 39596095981, 197980479905]

約数ペア:

[(1, 197980479905), (5, 39596095981), (13, 15229267685), (65, 3045853537), (157, 1261022165), (785, 252204433), (2041, 97001705), (10205, 19400341)]