21564088

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1559}}^1$

素因数の和:1604

約数の個数: 64

約数和(自身を含む): 52416000

約数和(自身を除く): 30851912

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1559, 1729, 1976, 3118, 3458, 6236, 6916, 10913, 12472, 13832, 20267, 21826, 29621, 40534, 43652, 59242, 81068, 87304, 118484, 141869, 162136, 207347, 236968, 283738, 385073, 414694, 567476, 770146, 829388, 1134952, 1540292, 1658776, 2695511, 3080584, 5391022, 10782044, 21564088]

約数ペア:

[(1, 21564088), (2, 10782044), (4, 5391022), (7, 3080584), (8, 2695511), (13, 1658776), (14, 1540292), (19, 1134952), (26, 829388), (28, 770146), (38, 567476), (52, 414694), (56, 385073), (76, 283738), (91, 236968), (104, 207347), (133, 162136), (152, 141869), (182, 118484), (247, 87304), (266, 81068), (364, 59242), (494, 43652), (532, 40534), (728, 29621), (988, 21826), (1064, 20267), (1559, 13832), (1729, 12472), (1976, 10913), (3118, 6916), (3458, 6236)]