51568720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1297}}^1$

素因数の和:1388

約数の個数: 80

約数和(自身を含む): 139062528

約数和(自身を除く): 87493808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1297, 1420, 1988, 2485, 2594, 2840, 3976, 4970, 5188, 5680, 6485, 7952, 9079, 9940, 10376, 12970, 18158, 19880, 20752, 25940, 36316, 39760, 45395, 51880, 72632, 90790, 92087, 103760, 145264, 181580, 184174, 363160, 368348, 460435, 644609, 726320, 736696, 920870, 1289218, 1473392, 1841740, 2578436, 3223045, 3683480, 5156872, 6446090, 7366960, 10313744, 12892180, 25784360, 51568720]

約数ペア:

[(1, 51568720), (2, 25784360), (4, 12892180), (5, 10313744), (7, 7366960), (8, 6446090), (10, 5156872), (14, 3683480), (16, 3223045), (20, 2578436), (28, 1841740), (35, 1473392), (40, 1289218), (56, 920870), (70, 736696), (71, 726320), (80, 644609), (112, 460435), (140, 368348), (142, 363160), (280, 184174), (284, 181580), (355, 145264), (497, 103760), (560, 92087), (568, 90790), (710, 72632), (994, 51880), (1136, 45395), (1297, 39760), (1420, 36316), (1988, 25940), (2485, 20752), (2594, 19880), (2840, 18158), (3976, 12970), (4970, 10376), (5188, 9940), (5680, 9079), (6485, 7952)]