20804640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:594

約数の個数: 96

約数和(自身を含む): 66407040

約数和(自身を除く): 45602400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 89, 96, 120, 160, 178, 240, 267, 356, 445, 480, 487, 534, 712, 890, 974, 1068, 1335, 1424, 1461, 1780, 1948, 2136, 2435, 2670, 2848, 2922, 3560, 3896, 4272, 4870, 5340, 5844, 7120, 7305, 7792, 8544, 9740, 10680, 11688, 14240, 14610, 15584, 19480, 21360, 23376, 29220, 38960, 42720, 43343, 46752, 58440, 77920, 86686, 116880, 130029, 173372, 216715, 233760, 260058, 346744, 433430, 520116, 650145, 693488, 866860, 1040232, 1300290, 1386976, 1733720, 2080464, 2600580, 3467440, 4160928, 5201160, 6934880, 10402320, 20804640]

約数ペア:

[(1, 20804640), (2, 10402320), (3, 6934880), (4, 5201160), (5, 4160928), (6, 3467440), (8, 2600580), (10, 2080464), (12, 1733720), (15, 1386976), (16, 1300290), (20, 1040232), (24, 866860), (30, 693488), (32, 650145), (40, 520116), (48, 433430), (60, 346744), (80, 260058), (89, 233760), (96, 216715), (120, 173372), (160, 130029), (178, 116880), (240, 86686), (267, 77920), (356, 58440), (445, 46752), (480, 43343), (487, 42720), (534, 38960), (712, 29220), (890, 23376), (974, 21360), (1068, 19480), (1335, 15584), (1424, 14610), (1461, 14240), (1780, 11688), (1948, 10680), (2136, 9740), (2435, 8544), (2670, 7792), (2848, 7305), (2922, 7120), (3560, 5844), (3896, 5340), (4272, 4870)]