20101760

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{641}}^1$

素因数の和:674

約数の個数: 96

約数和(自身を含む): 55988820

約数和(自身を除く): 35887060

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 640, 641, 784, 896, 980, 1120, 1282, 1568, 1960, 2240, 2564, 3136, 3205, 3920, 4480, 4487, 5128, 6272, 6410, 7840, 8974, 10256, 12820, 15680, 17948, 20512, 22435, 25640, 31360, 31409, 35896, 41024, 44870, 51280, 62818, 71792, 82048, 89740, 102560, 125636, 143584, 157045, 179480, 205120, 251272, 287168, 314090, 358960, 410240, 502544, 574336, 628180, 717920, 1005088, 1256360, 1435840, 2010176, 2512720, 2871680, 4020352, 5025440, 10050880, 20101760]

約数ペア:

[(1, 20101760), (2, 10050880), (4, 5025440), (5, 4020352), (7, 2871680), (8, 2512720), (10, 2010176), (14, 1435840), (16, 1256360), (20, 1005088), (28, 717920), (32, 628180), (35, 574336), (40, 502544), (49, 410240), (56, 358960), (64, 314090), (70, 287168), (80, 251272), (98, 205120), (112, 179480), (128, 157045), (140, 143584), (160, 125636), (196, 102560), (224, 89740), (245, 82048), (280, 71792), (320, 62818), (392, 51280), (448, 44870), (490, 41024), (560, 35896), (640, 31409), (641, 31360), (784, 25640), (896, 22435), (980, 20512), (1120, 17948), (1282, 15680), (1568, 12820), (1960, 10256), (2240, 8974), (2564, 7840), (3136, 6410), (3205, 6272), (3920, 5128), (4480, 4487)]