21816004

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 45924480

約数和(自身を除く): 24108476

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 67, 116, 134, 203, 268, 401, 406, 469, 802, 812, 938, 1604, 1876, 1943, 2807, 3886, 5614, 7772, 11228, 11629, 13601, 23258, 26867, 27202, 46516, 53734, 54404, 81403, 107468, 162806, 188069, 325612, 376138, 752276, 779143, 1558286, 3116572, 5454001, 10908002, 21816004]

約数ペア:

[(1, 21816004), (2, 10908002), (4, 5454001), (7, 3116572), (14, 1558286), (28, 779143), (29, 752276), (58, 376138), (67, 325612), (116, 188069), (134, 162806), (203, 107468), (268, 81403), (401, 54404), (406, 53734), (469, 46516), (802, 27202), (812, 26867), (938, 23258), (1604, 13601), (1876, 11629), (1943, 11228), (2807, 7772), (3886, 5614)]