81003020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{6971}}^1$

素因数の和:7070

約数の個数: 48

約数和(自身を含む): 196777728

約数和(自身を除く): 115774708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 2324, 2905, 5810, 6971, 11620, 13942, 27884, 34855, 48797, 69710, 97594, 139420, 195188, 243985, 487970, 578593, 975940, 1157186, 2314372, 2892965, 4050151, 5785930, 8100302, 11571860, 16200604, 20250755, 40501510, 81003020]

約数ペア:

[(1, 81003020), (2, 40501510), (4, 20250755), (5, 16200604), (7, 11571860), (10, 8100302), (14, 5785930), (20, 4050151), (28, 2892965), (35, 2314372), (70, 1157186), (83, 975940), (140, 578593), (166, 487970), (332, 243985), (415, 195188), (581, 139420), (830, 97594), (1162, 69710), (1660, 48797), (2324, 34855), (2905, 27884), (5810, 13942), (6971, 11620)]