21331518

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 46862640

約数和(自身を除く): 25531122

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 109, 169, 193, 218, 327, 338, 386, 507, 579, 654, 1014, 1158, 1417, 2509, 2834, 4251, 5018, 7527, 8502, 15054, 18421, 21037, 32617, 36842, 42074, 55263, 63111, 65234, 97851, 110526, 126222, 195702, 273481, 546962, 820443, 1640886, 3555253, 7110506, 10665759, 21331518]

約数ペア:

[(1, 21331518), (2, 10665759), (3, 7110506), (6, 3555253), (13, 1640886), (26, 820443), (39, 546962), (78, 273481), (109, 195702), (169, 126222), (193, 110526), (218, 97851), (327, 65234), (338, 63111), (386, 55263), (507, 42074), (579, 36842), (654, 32617), (1014, 21037), (1158, 18421), (1417, 15054), (2509, 8502), (2834, 7527), (4251, 5018)]