81524975

素因数分解:

$5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1091}}^1$

素因数の和:1176

約数の個数: 36

約数和(自身を含む): 119632968

約数和(自身を除く): 38107993

約数列:

[1, 5, 7, 25, 35, 49, 61, 175, 245, 305, 427, 1091, 1225, 1525, 2135, 2989, 5455, 7637, 10675, 14945, 27275, 38185, 53459, 66551, 74725, 190925, 267295, 332755, 465857, 1336475, 1663775, 2329285, 3260999, 11646425, 16304995, 81524975]

約数ペア:

[(1, 81524975), (5, 16304995), (7, 11646425), (25, 3260999), (35, 2329285), (49, 1663775), (61, 1336475), (175, 465857), (245, 332755), (305, 267295), (427, 190925), (1091, 74725), (1225, 66551), (1525, 53459), (2135, 38185), (2989, 27275), (5455, 14945), (7637, 10675)]