20781752

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3727}}^1$

素因数の和:3791

約数の個数: 32

約数和(自身を含む): 42275520

約数和(自身を除く): 21493768

約数列:

[1, 2, 4, 8, 17, 34, 41, 68, 82, 136, 164, 328, 697, 1394, 2788, 3727, 5576, 7454, 14908, 29816, 63359, 126718, 152807, 253436, 305614, 506872, 611228, 1222456, 2597719, 5195438, 10390876, 20781752]

約数ペア:

[(1, 20781752), (2, 10390876), (4, 5195438), (8, 2597719), (17, 1222456), (34, 611228), (41, 506872), (68, 305614), (82, 253436), (136, 152807), (164, 126718), (328, 63359), (697, 29816), (1394, 14908), (2788, 7454), (3727, 5576)]