80405820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{40609}}^1$

素因数の和:40635

約数の個数: 72

約数和(自身を含む): 266076720

約数和(自身を除く): 185670900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 40609, 81218, 121827, 162436, 203045, 243654, 365481, 406090, 446699, 487308, 609135, 730962, 812180, 893398, 1218270, 1340097, 1461924, 1786796, 1827405, 2233495, 2436540, 2680194, 3654810, 4020291, 4466990, 5360388, 6700485, 7309620, 8040582, 8933980, 13400970, 16081164, 20101455, 26801940, 40202910, 80405820]

約数ペア:

[(1, 80405820), (2, 40202910), (3, 26801940), (4, 20101455), (5, 16081164), (6, 13400970), (9, 8933980), (10, 8040582), (11, 7309620), (12, 6700485), (15, 5360388), (18, 4466990), (20, 4020291), (22, 3654810), (30, 2680194), (33, 2436540), (36, 2233495), (44, 1827405), (45, 1786796), (55, 1461924), (60, 1340097), (66, 1218270), (90, 893398), (99, 812180), (110, 730962), (132, 609135), (165, 487308), (180, 446699), (198, 406090), (220, 365481), (330, 243654), (396, 203045), (495, 162436), (660, 121827), (990, 81218), (1980, 40609)]