21808076

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{4517}}^1$

素因数の和:4609

約数の個数: 24

約数和(自身を含む): 40987296

約数和(自身を除く): 19179220

約数列:

[1, 2, 4, 17, 34, 68, 71, 142, 284, 1207, 2414, 4517, 4828, 9034, 18068, 76789, 153578, 307156, 320707, 641414, 1282828, 5452019, 10904038, 21808076]

約数ペア:

[(1, 21808076), (2, 10904038), (4, 5452019), (17, 1282828), (34, 641414), (68, 320707), (71, 307156), (142, 153578), (284, 76789), (1207, 18068), (2414, 9034), (4517, 4828)]