21005688

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{317}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 57697920

約数和(自身を除く): 36692232

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 251, 264, 317, 502, 634, 753, 951, 1004, 1268, 1506, 1902, 2008, 2536, 2761, 3012, 3487, 3804, 5522, 6024, 6974, 7608, 8283, 10461, 11044, 13948, 16566, 20922, 22088, 27896, 33132, 41844, 66264, 79567, 83688, 159134, 238701, 318268, 477402, 636536, 875237, 954804, 1750474, 1909608, 2625711, 3500948, 5251422, 7001896, 10502844, 21005688]

約数ペア:

[(1, 21005688), (2, 10502844), (3, 7001896), (4, 5251422), (6, 3500948), (8, 2625711), (11, 1909608), (12, 1750474), (22, 954804), (24, 875237), (33, 636536), (44, 477402), (66, 318268), (88, 238701), (132, 159134), (251, 83688), (264, 79567), (317, 66264), (502, 41844), (634, 33132), (753, 27896), (951, 22088), (1004, 20922), (1268, 16566), (1506, 13948), (1902, 11044), (2008, 10461), (2536, 8283), (2761, 7608), (3012, 6974), (3487, 6024), (3804, 5522)]