81440920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{683}}^1$

素因数の和:976

約数の個数: 64

約数和(自身を含む): 200931840

約数和(自身を除く): 119490920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 271, 440, 542, 683, 1084, 1355, 1366, 2168, 2710, 2732, 2981, 3415, 5420, 5464, 5962, 6830, 7513, 10840, 11924, 13660, 14905, 15026, 23848, 27320, 29810, 30052, 37565, 59620, 60104, 75130, 119240, 150260, 185093, 300520, 370186, 740372, 925465, 1480744, 1850930, 2036023, 3701860, 4072046, 7403720, 8144092, 10180115, 16288184, 20360230, 40720460, 81440920]

約数ペア:

[(1, 81440920), (2, 40720460), (4, 20360230), (5, 16288184), (8, 10180115), (10, 8144092), (11, 7403720), (20, 4072046), (22, 3701860), (40, 2036023), (44, 1850930), (55, 1480744), (88, 925465), (110, 740372), (220, 370186), (271, 300520), (440, 185093), (542, 150260), (683, 119240), (1084, 75130), (1355, 60104), (1366, 59620), (2168, 37565), (2710, 30052), (2732, 29810), (2981, 27320), (3415, 23848), (5420, 15026), (5464, 14905), (5962, 13660), (6830, 11924), (7513, 10840)]