68940290

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{1091}}^1$

素因数の和:1258

約数の個数: 32

約数和(自身を含む): 127370880

約数和(自身を除く): 58430590

約数列:

[1, 2, 5, 10, 71, 89, 142, 178, 355, 445, 710, 890, 1091, 2182, 5455, 6319, 10910, 12638, 31595, 63190, 77461, 97099, 154922, 194198, 387305, 485495, 774610, 970990, 6894029, 13788058, 34470145, 68940290]

約数ペア:

[(1, 68940290), (2, 34470145), (5, 13788058), (10, 6894029), (71, 970990), (89, 774610), (142, 485495), (178, 387305), (355, 194198), (445, 154922), (710, 97099), (890, 77461), (1091, 63190), (2182, 31595), (5455, 12638), (6319, 10910)]