21493868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 43593984

約数和(自身を除く): 22100116

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 67, 92, 134, 253, 268, 317, 506, 634, 737, 1012, 1268, 1474, 1541, 2948, 3082, 3487, 6164, 6974, 7291, 13948, 14582, 16951, 21239, 29164, 33902, 42478, 67804, 80201, 84956, 160402, 233629, 320804, 467258, 488497, 934516, 976994, 1953988, 5373467, 10746934, 21493868]

約数ペア:

[(1, 21493868), (2, 10746934), (4, 5373467), (11, 1953988), (22, 976994), (23, 934516), (44, 488497), (46, 467258), (67, 320804), (92, 233629), (134, 160402), (253, 84956), (268, 80201), (317, 67804), (506, 42478), (634, 33902), (737, 29164), (1012, 21239), (1268, 16951), (1474, 14582), (1541, 13948), (2948, 7291), (3082, 6974), (3487, 6164)]