17981828

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1061}}^1$

素因数の和:1307

約数の個数: 24

約数和(自身を含む): 33304320

約数和(自身を除く): 15322492

約数列:

[1, 2, 4, 19, 38, 76, 223, 446, 892, 1061, 2122, 4237, 4244, 8474, 16948, 20159, 40318, 80636, 236603, 473206, 946412, 4495457, 8990914, 17981828]

約数ペア:

[(1, 17981828), (2, 8990914), (4, 4495457), (19, 946412), (38, 473206), (76, 236603), (223, 80636), (446, 40318), (892, 20159), (1061, 16948), (2122, 8474), (4237, 4244)]