20729200

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1787}}^1$

素因数の和:1834

約数の個数: 60

約数和(自身を含む): 51548040

約数和(自身を除く): 30818840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 145, 200, 232, 290, 400, 464, 580, 725, 1160, 1450, 1787, 2320, 2900, 3574, 5800, 7148, 8935, 11600, 14296, 17870, 28592, 35740, 44675, 51823, 71480, 89350, 103646, 142960, 178700, 207292, 259115, 357400, 414584, 518230, 714800, 829168, 1036460, 1295575, 2072920, 2591150, 4145840, 5182300, 10364600, 20729200]

約数ペア:

[(1, 20729200), (2, 10364600), (4, 5182300), (5, 4145840), (8, 2591150), (10, 2072920), (16, 1295575), (20, 1036460), (25, 829168), (29, 714800), (40, 518230), (50, 414584), (58, 357400), (80, 259115), (100, 207292), (116, 178700), (145, 142960), (200, 103646), (232, 89350), (290, 71480), (400, 51823), (464, 44675), (580, 35740), (725, 28592), (1160, 17870), (1450, 14296), (1787, 11600), (2320, 8935), (2900, 7148), (3574, 5800)]