28420847

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 37588992

約数和(自身を除く): 9168145

約数列:

[1, 7, 13, 23, 37, 91, 161, 259, 299, 367, 481, 851, 2093, 2569, 3367, 4771, 5957, 8441, 11063, 13579, 33397, 59087, 77441, 95053, 109733, 176527, 312317, 768131, 1235689, 2186219, 4060121, 28420847]

約数ペア:

[(1, 28420847), (7, 4060121), (13, 2186219), (23, 1235689), (37, 768131), (91, 312317), (161, 176527), (259, 109733), (299, 95053), (367, 77441), (481, 59087), (851, 33397), (2093, 13579), (2569, 11063), (3367, 8441), (4771, 5957)]