20247680

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1861}}^1$

素因数の和:1897

約数の個数: 64

約数和(自身を含む): 51279480

約数和(自身を除く): 31031800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 1861, 2176, 2720, 3722, 5440, 7444, 9305, 10880, 14888, 18610, 29776, 31637, 37220, 59552, 63274, 74440, 119104, 126548, 148880, 158185, 238208, 253096, 297760, 316370, 506192, 595520, 632740, 1012384, 1191040, 1265480, 2024768, 2530960, 4049536, 5061920, 10123840, 20247680]

約数ペア:

[(1, 20247680), (2, 10123840), (4, 5061920), (5, 4049536), (8, 2530960), (10, 2024768), (16, 1265480), (17, 1191040), (20, 1012384), (32, 632740), (34, 595520), (40, 506192), (64, 316370), (68, 297760), (80, 253096), (85, 238208), (128, 158185), (136, 148880), (160, 126548), (170, 119104), (272, 74440), (320, 63274), (340, 59552), (544, 37220), (640, 31637), (680, 29776), (1088, 18610), (1360, 14888), (1861, 10880), (2176, 9305), (2720, 7444), (3722, 5440)]