20887300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:637

約数の個数: 72

約数和(自身を含む): 52871616

約数和(自身を除く): 31984316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 53, 70, 100, 106, 140, 175, 212, 265, 350, 371, 530, 563, 700, 742, 1060, 1126, 1325, 1484, 1855, 2252, 2650, 2815, 3710, 3941, 5300, 5630, 7420, 7882, 9275, 11260, 14075, 15764, 18550, 19705, 28150, 29839, 37100, 39410, 56300, 59678, 78820, 98525, 119356, 149195, 197050, 208873, 298390, 394100, 417746, 596780, 745975, 835492, 1044365, 1491950, 2088730, 2983900, 4177460, 5221825, 10443650, 20887300]

約数ペア:

[(1, 20887300), (2, 10443650), (4, 5221825), (5, 4177460), (7, 2983900), (10, 2088730), (14, 1491950), (20, 1044365), (25, 835492), (28, 745975), (35, 596780), (50, 417746), (53, 394100), (70, 298390), (100, 208873), (106, 197050), (140, 149195), (175, 119356), (212, 98525), (265, 78820), (350, 59678), (371, 56300), (530, 39410), (563, 37100), (700, 29839), (742, 28150), (1060, 19705), (1126, 18550), (1325, 15764), (1484, 14075), (1855, 11260), (2252, 9275), (2650, 7882), (2815, 7420), (3710, 5630), (3941, 5300)]