20975556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{3727}}^1$

素因数の和:3808

約数の個数: 48

約数和(自身を含む): 56784896

約数和(自身を除く): 35809340

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 67, 84, 134, 201, 268, 402, 469, 804, 938, 1407, 1876, 2814, 3727, 5628, 7454, 11181, 14908, 22362, 26089, 44724, 52178, 78267, 104356, 156534, 249709, 313068, 499418, 749127, 998836, 1498254, 1747963, 2996508, 3495926, 5243889, 6991852, 10487778, 20975556]

約数ペア:

[(1, 20975556), (2, 10487778), (3, 6991852), (4, 5243889), (6, 3495926), (7, 2996508), (12, 1747963), (14, 1498254), (21, 998836), (28, 749127), (42, 499418), (67, 313068), (84, 249709), (134, 156534), (201, 104356), (268, 78267), (402, 52178), (469, 44724), (804, 26089), (938, 22362), (1407, 14908), (1876, 11181), (2814, 7454), (3727, 5628)]