28700815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 40896576

約数和(自身を除く): 12195761

約数列:

[1, 5, 11, 13, 55, 65, 137, 143, 293, 685, 715, 1465, 1507, 1781, 3223, 3809, 7535, 8905, 16115, 19045, 19591, 40141, 41899, 97955, 200705, 209495, 441551, 521833, 2207755, 2609165, 5740163, 28700815]

約数ペア:

[(1, 28700815), (5, 5740163), (11, 2609165), (13, 2207755), (55, 521833), (65, 441551), (137, 209495), (143, 200705), (293, 97955), (685, 41899), (715, 40141), (1465, 19591), (1507, 19045), (1781, 16115), (3223, 8905), (3809, 7535)]