20247220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4987}}^1$

素因数の和:5032

約数の個数: 48

約数和(自身を含む): 50279040

約数和(自身を除く): 30031820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4987, 9974, 19948, 24935, 34909, 49870, 69818, 99740, 139636, 144623, 174545, 289246, 349090, 578492, 698180, 723115, 1012361, 1446230, 2024722, 2892460, 4049444, 5061805, 10123610, 20247220]

約数ペア:

[(1, 20247220), (2, 10123610), (4, 5061805), (5, 4049444), (7, 2892460), (10, 2024722), (14, 1446230), (20, 1012361), (28, 723115), (29, 698180), (35, 578492), (58, 349090), (70, 289246), (116, 174545), (140, 144623), (145, 139636), (203, 99740), (290, 69818), (406, 49870), (580, 34909), (812, 24935), (1015, 19948), (2030, 9974), (4060, 4987)]