20686720640

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1901353}}^1$

素因数の和:1901389

約数の個数: 64

約数和(自身を含む): 52363289160

約数和(自身を除く): 31676568520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 2176, 2720, 5440, 10880, 1901353, 3802706, 7605412, 9506765, 15210824, 19013530, 30421648, 32323001, 38027060, 60843296, 64646002, 76054120, 121686592, 129292004, 152108240, 161615005, 243373184, 258584008, 304216480, 323230010, 517168016, 608432960, 646460020, 1034336032, 1216865920, 1292920040, 2068672064, 2585840080, 4137344128, 5171680160, 10343360320, 20686720640]

約数ペア:

[(1, 20686720640), (2, 10343360320), (4, 5171680160), (5, 4137344128), (8, 2585840080), (10, 2068672064), (16, 1292920040), (17, 1216865920), (20, 1034336032), (32, 646460020), (34, 608432960), (40, 517168016), (64, 323230010), (68, 304216480), (80, 258584008), (85, 243373184), (128, 161615005), (136, 152108240), (160, 129292004), (170, 121686592), (272, 76054120), (320, 64646002), (340, 60843296), (544, 38027060), (640, 32323001), (680, 30421648), (1088, 19013530), (1360, 15210824), (2176, 9506765), (2720, 7605412), (5440, 3802706), (10880, 1901353)]