20809768

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{21859}}^1$

素因数の和:21889

約数の個数: 32

約数和(自身を含む): 47217600

約数和(自身を除く): 26407832

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 238, 476, 952, 21859, 43718, 87436, 153013, 174872, 306026, 371603, 612052, 743206, 1224104, 1486412, 2601221, 2972824, 5202442, 10404884, 20809768]

約数ペア:

[(1, 20809768), (2, 10404884), (4, 5202442), (7, 2972824), (8, 2601221), (14, 1486412), (17, 1224104), (28, 743206), (34, 612052), (56, 371603), (68, 306026), (119, 174872), (136, 153013), (238, 87436), (476, 43718), (952, 21859)]