81238400

素因数分解:

$2^7\times 5^2\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:556

約数の個数: 96

約数和(自身を含む): 204897600

約数和(自身を除く): 123659200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 53, 64, 80, 100, 106, 128, 160, 200, 212, 265, 320, 400, 424, 479, 530, 640, 800, 848, 958, 1060, 1325, 1600, 1696, 1916, 2120, 2395, 2650, 3200, 3392, 3832, 4240, 4790, 5300, 6784, 7664, 8480, 9580, 10600, 11975, 15328, 16960, 19160, 21200, 23950, 25387, 30656, 33920, 38320, 42400, 47900, 50774, 61312, 76640, 84800, 95800, 101548, 126935, 153280, 169600, 191600, 203096, 253870, 306560, 383200, 406192, 507740, 634675, 766400, 812384, 1015480, 1269350, 1532800, 1624768, 2030960, 2538700, 3249536, 4061920, 5077400, 8123840, 10154800, 16247680, 20309600, 40619200, 81238400]

約数ペア:

[(1, 81238400), (2, 40619200), (4, 20309600), (5, 16247680), (8, 10154800), (10, 8123840), (16, 5077400), (20, 4061920), (25, 3249536), (32, 2538700), (40, 2030960), (50, 1624768), (53, 1532800), (64, 1269350), (80, 1015480), (100, 812384), (106, 766400), (128, 634675), (160, 507740), (200, 406192), (212, 383200), (265, 306560), (320, 253870), (400, 203096), (424, 191600), (479, 169600), (530, 153280), (640, 126935), (800, 101548), (848, 95800), (958, 84800), (1060, 76640), (1325, 61312), (1600, 50774), (1696, 47900), (1916, 42400), (2120, 38320), (2395, 33920), (2650, 30656), (3200, 25387), (3392, 23950), (3832, 21200), (4240, 19160), (4790, 16960), (5300, 15328), (6784, 11975), (7664, 10600), (8480, 9580)]