20589975

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{769}}^1$

素因数の和:809

約数の個数: 72

約数和(自身を含む): 44684640

約数和(自身を除く): 24094665

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 51, 63, 75, 85, 105, 119, 153, 175, 225, 255, 315, 357, 425, 525, 595, 765, 769, 1071, 1275, 1575, 1785, 2307, 2975, 3825, 3845, 5355, 5383, 6921, 8925, 11535, 13073, 16149, 19225, 26775, 26915, 34605, 39219, 48447, 57675, 65365, 80745, 91511, 117657, 134575, 173025, 196095, 242235, 274533, 326825, 403725, 457555, 588285, 823599, 980475, 1211175, 1372665, 2287775, 2941425, 4117995, 6863325, 20589975]

約数ペア:

[(1, 20589975), (3, 6863325), (5, 4117995), (7, 2941425), (9, 2287775), (15, 1372665), (17, 1211175), (21, 980475), (25, 823599), (35, 588285), (45, 457555), (51, 403725), (63, 326825), (75, 274533), (85, 242235), (105, 196095), (119, 173025), (153, 134575), (175, 117657), (225, 91511), (255, 80745), (315, 65365), (357, 57675), (425, 48447), (525, 39219), (595, 34605), (765, 26915), (769, 26775), (1071, 19225), (1275, 16149), (1575, 13073), (1785, 11535), (2307, 8925), (2975, 6921), (3825, 5383), (3845, 5355)]