20496560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2153}}^1$

素因数の和:2190

約数の個数: 80

約数和(自身を含む): 57692736

約数和(自身を除く): 37196176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2153, 2380, 4306, 4760, 8612, 9520, 10765, 15071, 17224, 21530, 30142, 34448, 36601, 43060, 60284, 73202, 75355, 86120, 120568, 146404, 150710, 172240, 183005, 241136, 256207, 292808, 301420, 366010, 512414, 585616, 602840, 732020, 1024828, 1205680, 1281035, 1464040, 2049656, 2562070, 2928080, 4099312, 5124140, 10248280, 20496560]

約数ペア:

[(1, 20496560), (2, 10248280), (4, 5124140), (5, 4099312), (7, 2928080), (8, 2562070), (10, 2049656), (14, 1464040), (16, 1281035), (17, 1205680), (20, 1024828), (28, 732020), (34, 602840), (35, 585616), (40, 512414), (56, 366010), (68, 301420), (70, 292808), (80, 256207), (85, 241136), (112, 183005), (119, 172240), (136, 150710), (140, 146404), (170, 120568), (238, 86120), (272, 75355), (280, 73202), (340, 60284), (476, 43060), (560, 36601), (595, 34448), (680, 30142), (952, 21530), (1190, 17224), (1360, 15071), (1904, 10765), (2153, 9520), (2380, 8612), (4306, 4760)]