20657889

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3769}}^1$

素因数の和:3814

約数の個数: 32

約数和(自身を含む): 36192000

約数和(自身を除く): 15534111

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3769, 5481, 11307, 26383, 33921, 79149, 101763, 109301, 237447, 327903, 712341, 765107, 983709, 2295321, 2951127, 6885963, 20657889]

約数ペア:

[(1, 20657889), (3, 6885963), (7, 2951127), (9, 2295321), (21, 983709), (27, 765107), (29, 712341), (63, 327903), (87, 237447), (189, 109301), (203, 101763), (261, 79149), (609, 33921), (783, 26383), (1827, 11307), (3769, 5481)]