66856720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{431}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 178702848

約数和(自身を除く): 111846128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 277, 280, 431, 554, 560, 862, 1108, 1385, 1724, 1939, 2155, 2216, 2770, 3017, 3448, 3878, 4310, 4432, 5540, 6034, 6896, 7756, 8620, 9695, 11080, 12068, 15085, 15512, 17240, 19390, 22160, 24136, 30170, 31024, 34480, 38780, 48272, 60340, 77560, 119387, 120680, 155120, 238774, 241360, 477548, 596935, 835709, 955096, 1193870, 1671418, 1910192, 2387740, 3342836, 4178545, 4775480, 6685672, 8357090, 9550960, 13371344, 16714180, 33428360, 66856720]

約数ペア:

[(1, 66856720), (2, 33428360), (4, 16714180), (5, 13371344), (7, 9550960), (8, 8357090), (10, 6685672), (14, 4775480), (16, 4178545), (20, 3342836), (28, 2387740), (35, 1910192), (40, 1671418), (56, 1193870), (70, 955096), (80, 835709), (112, 596935), (140, 477548), (277, 241360), (280, 238774), (431, 155120), (554, 120680), (560, 119387), (862, 77560), (1108, 60340), (1385, 48272), (1724, 38780), (1939, 34480), (2155, 31024), (2216, 30170), (2770, 24136), (3017, 22160), (3448, 19390), (3878, 17240), (4310, 15512), (4432, 15085), (5540, 12068), (6034, 11080), (6896, 9695), (7756, 8620)]