19943200

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:374

約数の個数: 72

約数和(自身を含む): 49379652

約数和(自身を除く): 29436452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 160, 194, 200, 257, 388, 400, 485, 514, 776, 800, 970, 1028, 1285, 1552, 1940, 2056, 2425, 2570, 3104, 3880, 4112, 4850, 5140, 6425, 7760, 8224, 9700, 10280, 12850, 15520, 19400, 20560, 24929, 25700, 38800, 41120, 49858, 51400, 77600, 99716, 102800, 124645, 199432, 205600, 249290, 398864, 498580, 623225, 797728, 997160, 1246450, 1994320, 2492900, 3988640, 4985800, 9971600, 19943200]

約数ペア:

[(1, 19943200), (2, 9971600), (4, 4985800), (5, 3988640), (8, 2492900), (10, 1994320), (16, 1246450), (20, 997160), (25, 797728), (32, 623225), (40, 498580), (50, 398864), (80, 249290), (97, 205600), (100, 199432), (160, 124645), (194, 102800), (200, 99716), (257, 77600), (388, 51400), (400, 49858), (485, 41120), (514, 38800), (776, 25700), (800, 24929), (970, 20560), (1028, 19400), (1285, 15520), (1552, 12850), (1940, 10280), (2056, 9700), (2425, 8224), (2570, 7760), (3104, 6425), (3880, 5140), (4112, 4850)]