128219255

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 164560896

約数和(自身を除く): 36341641

約数列:

[1, 5, 31, 61, 71, 155, 191, 305, 355, 955, 1891, 2201, 4331, 5921, 9455, 11005, 11651, 13561, 21655, 29605, 58255, 67805, 134261, 361181, 420391, 671305, 827221, 1805905, 2101955, 4136105, 25643851, 128219255]

約数ペア:

[(1, 128219255), (5, 25643851), (31, 4136105), (61, 2101955), (71, 1805905), (155, 827221), (191, 671305), (305, 420391), (355, 361181), (955, 134261), (1891, 67805), (2201, 58255), (4331, 29605), (5921, 21655), (9455, 13561), (11005, 11651)]