19803955

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{2239}}^1$

素因数の和:2334

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 5194445

約数列:

[1, 5, 29, 61, 145, 305, 1769, 2239, 8845, 11195, 64931, 136579, 324655, 682895, 3960791, 19803955]

約数ペア:

[(1, 19803955), (5, 3960791), (29, 682895), (61, 324655), (145, 136579), (305, 64931), (1769, 11195), (2239, 8845)]