217897790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{14251}}^1$

素因数の和:14408

約数の個数: 32

約数和(自身を含む): 430980480

約数和(自身を除く): 213082690

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 139, 278, 695, 1390, 1529, 3058, 7645, 14251, 15290, 28502, 71255, 142510, 156761, 313522, 783805, 1567610, 1980889, 3961778, 9904445, 19808890, 21789779, 43579558, 108948895, 217897790]

約数ペア:

[(1, 217897790), (2, 108948895), (5, 43579558), (10, 21789779), (11, 19808890), (22, 9904445), (55, 3961778), (110, 1980889), (139, 1567610), (278, 783805), (695, 313522), (1390, 156761), (1529, 142510), (3058, 71255), (7645, 28502), (14251, 15290)]