21691612655

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{1124209}}^1$

素因数の和:1124458

約数の個数: 16

約数和(自身を含む): 27682547040

約数和(自身を除く): 5990934385

約数列:

[1, 5, 17, 85, 227, 1135, 3859, 19295, 1124209, 5621045, 19111553, 95557765, 255195443, 1275977215, 4338322531, 21691612655]

約数ペア:

[(1, 21691612655), (5, 4338322531), (17, 1275977215), (85, 255195443), (227, 95557765), (1135, 19111553), (3859, 5621045), (19295, 1124209)]