128781471

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{15217}}^1$

素因数の和:15271

約数の個数: 32

約数和(自身を含む): 218165248

約数和(自身を除く): 89383777

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2821, 8463, 15217, 45651, 106519, 197821, 319557, 471727, 593463, 1384747, 1415181, 3302089, 4154241, 6132451, 9906267, 18397353, 42927157, 128781471]

約数ペア:

[(1, 128781471), (3, 42927157), (7, 18397353), (13, 9906267), (21, 6132451), (31, 4154241), (39, 3302089), (91, 1415181), (93, 1384747), (217, 593463), (273, 471727), (403, 319557), (651, 197821), (1209, 106519), (2821, 45651), (8463, 15217)]