81008800

素因数分解:

$2^5\times 5^2\times {\mathrm{109}}^1\times {\mathrm{929}}^1$

素因数の和:1058

約数の個数: 72

約数和(自身を含む): 199791900

約数和(自身を除く): 118783100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 109, 160, 200, 218, 400, 436, 545, 800, 872, 929, 1090, 1744, 1858, 2180, 2725, 3488, 3716, 4360, 4645, 5450, 7432, 8720, 9290, 10900, 14864, 17440, 18580, 21800, 23225, 29728, 37160, 43600, 46450, 74320, 87200, 92900, 101261, 148640, 185800, 202522, 371600, 405044, 506305, 743200, 810088, 1012610, 1620176, 2025220, 2531525, 3240352, 4050440, 5063050, 8100880, 10126100, 16201760, 20252200, 40504400, 81008800]

約数ペア:

[(1, 81008800), (2, 40504400), (4, 20252200), (5, 16201760), (8, 10126100), (10, 8100880), (16, 5063050), (20, 4050440), (25, 3240352), (32, 2531525), (40, 2025220), (50, 1620176), (80, 1012610), (100, 810088), (109, 743200), (160, 506305), (200, 405044), (218, 371600), (400, 202522), (436, 185800), (545, 148640), (800, 101261), (872, 92900), (929, 87200), (1090, 74320), (1744, 46450), (1858, 43600), (2180, 37160), (2725, 29728), (3488, 23225), (3716, 21800), (4360, 18580), (4645, 17440), (5450, 14864), (7432, 10900), (8720, 9290)]