21202720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1721}}^1$

素因数の和:1754

約数の個数: 96

約数和(自身を含む): 62487936

約数和(自身を除く): 41285216

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 352, 385, 440, 560, 616, 770, 880, 1120, 1232, 1540, 1721, 1760, 2464, 3080, 3442, 6160, 6884, 8605, 12047, 12320, 13768, 17210, 18931, 24094, 27536, 34420, 37862, 48188, 55072, 60235, 68840, 75724, 94655, 96376, 120470, 132517, 137680, 151448, 189310, 192752, 240940, 265034, 275360, 302896, 378620, 385504, 481880, 530068, 605792, 662585, 757240, 963760, 1060136, 1325170, 1514480, 1927520, 2120272, 2650340, 3028960, 4240544, 5300680, 10601360, 21202720]

約数ペア:

[(1, 21202720), (2, 10601360), (4, 5300680), (5, 4240544), (7, 3028960), (8, 2650340), (10, 2120272), (11, 1927520), (14, 1514480), (16, 1325170), (20, 1060136), (22, 963760), (28, 757240), (32, 662585), (35, 605792), (40, 530068), (44, 481880), (55, 385504), (56, 378620), (70, 302896), (77, 275360), (80, 265034), (88, 240940), (110, 192752), (112, 189310), (140, 151448), (154, 137680), (160, 132517), (176, 120470), (220, 96376), (224, 94655), (280, 75724), (308, 68840), (352, 60235), (385, 55072), (440, 48188), (560, 37862), (616, 34420), (770, 27536), (880, 24094), (1120, 18931), (1232, 17210), (1540, 13768), (1721, 12320), (1760, 12047), (2464, 8605), (3080, 6884), (3442, 6160)]