21987636

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{797}}^1$

素因数の和:845

約数の個数: 72

約数和(自身を含む): 59435040

約数和(自身を除く): 37447404

約数列:

[1, 2, 3, 4, 6, 11, 12, 19, 22, 33, 38, 44, 57, 66, 76, 114, 121, 132, 209, 228, 242, 363, 418, 484, 627, 726, 797, 836, 1254, 1452, 1594, 2299, 2391, 2508, 3188, 4598, 4782, 6897, 8767, 9196, 9564, 13794, 15143, 17534, 26301, 27588, 30286, 35068, 45429, 52602, 60572, 90858, 96437, 105204, 166573, 181716, 192874, 289311, 333146, 385748, 499719, 578622, 666292, 999438, 1157244, 1832303, 1998876, 3664606, 5496909, 7329212, 10993818, 21987636]

約数ペア:

[(1, 21987636), (2, 10993818), (3, 7329212), (4, 5496909), (6, 3664606), (11, 1998876), (12, 1832303), (19, 1157244), (22, 999438), (33, 666292), (38, 578622), (44, 499719), (57, 385748), (66, 333146), (76, 289311), (114, 192874), (121, 181716), (132, 166573), (209, 105204), (228, 96437), (242, 90858), (363, 60572), (418, 52602), (484, 45429), (627, 35068), (726, 30286), (797, 27588), (836, 26301), (1254, 17534), (1452, 15143), (1594, 13794), (2299, 9564), (2391, 9196), (2508, 8767), (3188, 6897), (4598, 4782)]