81757560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1399}}^1$

素因数の和:1900

約数の個数: 64

約数和(自身を含む): 245952000

約数和(自身を除く): 164194440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 487, 974, 1399, 1461, 1948, 2435, 2798, 2922, 3896, 4197, 4870, 5596, 5844, 6995, 7305, 8394, 9740, 11192, 11688, 13990, 14610, 16788, 19480, 20985, 27980, 29220, 33576, 41970, 55960, 58440, 83940, 167880, 681313, 1362626, 2043939, 2725252, 3406565, 4087878, 5450504, 6813130, 8175756, 10219695, 13626260, 16351512, 20439390, 27252520, 40878780, 81757560]

約数ペア:

[(1, 81757560), (2, 40878780), (3, 27252520), (4, 20439390), (5, 16351512), (6, 13626260), (8, 10219695), (10, 8175756), (12, 6813130), (15, 5450504), (20, 4087878), (24, 3406565), (30, 2725252), (40, 2043939), (60, 1362626), (120, 681313), (487, 167880), (974, 83940), (1399, 58440), (1461, 55960), (1948, 41970), (2435, 33576), (2798, 29220), (2922, 27980), (3896, 20985), (4197, 19480), (4870, 16788), (5596, 14610), (5844, 13990), (6995, 11688), (7305, 11192), (8394, 9740)]