81800155

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 106156800

約数和(自身を除く): 24356645

約数列:

[1, 5, 29, 37, 79, 145, 185, 193, 395, 965, 1073, 2291, 2923, 5365, 5597, 7141, 11455, 14615, 15247, 27985, 35705, 76235, 84767, 207089, 423835, 442163, 564139, 1035445, 2210815, 2820695, 16360031, 81800155]

約数ペア:

[(1, 81800155), (5, 16360031), (29, 2820695), (37, 2210815), (79, 1035445), (145, 564139), (185, 442163), (193, 423835), (395, 207089), (965, 84767), (1073, 76235), (2291, 35705), (2923, 27985), (5365, 15247), (5597, 14615), (7141, 11455)]