81402400

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{1049}}^1$

素因数の和:1166

約数の個数: 72

約数和(自身を含む): 200963700

約数和(自身を除く): 119561300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 160, 194, 200, 388, 400, 485, 776, 800, 970, 1049, 1552, 1940, 2098, 2425, 3104, 3880, 4196, 4850, 5245, 7760, 8392, 9700, 10490, 15520, 16784, 19400, 20980, 26225, 33568, 38800, 41960, 52450, 77600, 83920, 101753, 104900, 167840, 203506, 209800, 407012, 419600, 508765, 814024, 839200, 1017530, 1628048, 2035060, 2543825, 3256096, 4070120, 5087650, 8140240, 10175300, 16280480, 20350600, 40701200, 81402400]

約数ペア:

[(1, 81402400), (2, 40701200), (4, 20350600), (5, 16280480), (8, 10175300), (10, 8140240), (16, 5087650), (20, 4070120), (25, 3256096), (32, 2543825), (40, 2035060), (50, 1628048), (80, 1017530), (97, 839200), (100, 814024), (160, 508765), (194, 419600), (200, 407012), (388, 209800), (400, 203506), (485, 167840), (776, 104900), (800, 101753), (970, 83920), (1049, 77600), (1552, 52450), (1940, 41960), (2098, 38800), (2425, 33568), (3104, 26225), (3880, 20980), (4196, 19400), (4850, 16784), (5245, 15520), (7760, 10490), (8392, 9700)]