81220217

素因数分解:

${\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 93461760

約数和(自身を除く): 12241543

約数列:

[1, 13, 31, 37, 169, 403, 419, 481, 1147, 5239, 5447, 6253, 12989, 14911, 15503, 70811, 168857, 193843, 201539, 480593, 2195141, 2620007, 6247709, 81220217]

約数ペア:

[(1, 81220217), (13, 6247709), (31, 2620007), (37, 2195141), (169, 480593), (403, 201539), (419, 193843), (481, 168857), (1147, 70811), (5239, 15503), (5447, 14911), (6253, 12989)]