20680480

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4457}}^1$

素因数の和:4501

約数の個数: 48

約数和(自身を含む): 50553720

約数和(自身を除く): 29873240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4457, 4640, 8914, 17828, 22285, 35656, 44570, 71312, 89140, 129253, 142624, 178280, 258506, 356560, 517012, 646265, 713120, 1034024, 1292530, 2068048, 2585060, 4136096, 5170120, 10340240, 20680480]

約数ペア:

[(1, 20680480), (2, 10340240), (4, 5170120), (5, 4136096), (8, 2585060), (10, 2068048), (16, 1292530), (20, 1034024), (29, 713120), (32, 646265), (40, 517012), (58, 356560), (80, 258506), (116, 178280), (145, 142624), (160, 129253), (232, 89140), (290, 71312), (464, 44570), (580, 35656), (928, 22285), (1160, 17828), (2320, 8914), (4457, 4640)]