81640390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{1657}}^1$

素因数の和:2056

約数の個数: 32

約数和(自身を含む): 158770080

約数和(自身を除く): 77129690

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 379, 758, 1657, 1895, 3314, 3790, 4927, 8285, 9854, 16570, 21541, 24635, 43082, 49270, 107705, 215410, 628003, 1256006, 3140015, 6280030, 8164039, 16328078, 40820195, 81640390]

約数ペア:

[(1, 81640390), (2, 40820195), (5, 16328078), (10, 8164039), (13, 6280030), (26, 3140015), (65, 1256006), (130, 628003), (379, 215410), (758, 107705), (1657, 49270), (1895, 43082), (3314, 24635), (3790, 21541), (4927, 16570), (8285, 9854)]