28955225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{53}}^1$

素因数の和:158

約数の個数: 36

約数和(自身を含む): 40380228

約数和(自身を除く): 11425003

約数列:

[1, 5, 13, 25, 41, 53, 65, 205, 265, 325, 533, 689, 1025, 1325, 1681, 2173, 2665, 3445, 8405, 10865, 13325, 17225, 21853, 28249, 42025, 54325, 89093, 109265, 141245, 445465, 546325, 706225, 1158209, 2227325, 5791045, 28955225]

約数ペア:

[(1, 28955225), (5, 5791045), (13, 2227325), (25, 1158209), (41, 706225), (53, 546325), (65, 445465), (205, 141245), (265, 109265), (325, 89093), (533, 54325), (689, 42025), (1025, 28249), (1325, 21853), (1681, 17225), (2173, 13325), (2665, 10865), (3445, 8405)]