20718376

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{3109}}^1$

素因数の和:3146

約数の個数: 48

約数和(自身を含む): 47862900

約数和(自身を除く): 27144524

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 49, 56, 68, 98, 119, 136, 196, 238, 392, 476, 833, 952, 1666, 3109, 3332, 6218, 6664, 12436, 21763, 24872, 43526, 52853, 87052, 105706, 152341, 174104, 211412, 304682, 369971, 422824, 609364, 739942, 1218728, 1479884, 2589797, 2959768, 5179594, 10359188, 20718376]

約数ペア:

[(1, 20718376), (2, 10359188), (4, 5179594), (7, 2959768), (8, 2589797), (14, 1479884), (17, 1218728), (28, 739942), (34, 609364), (49, 422824), (56, 369971), (68, 304682), (98, 211412), (119, 174104), (136, 152341), (196, 105706), (238, 87052), (392, 52853), (476, 43526), (833, 24872), (952, 21763), (1666, 12436), (3109, 6664), (3332, 6218)]