21200718

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:553

約数の個数: 64

約数和(自身を含む): 53475840

約数和(自身を除く): 32275122

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 109, 154, 218, 231, 327, 421, 462, 654, 763, 842, 1199, 1263, 1526, 2289, 2398, 2526, 2947, 3597, 4578, 4631, 5894, 7194, 8393, 8841, 9262, 13893, 16786, 17682, 25179, 27786, 32417, 45889, 50358, 64834, 91778, 97251, 137667, 194502, 275334, 321223, 504779, 642446, 963669, 1009558, 1514337, 1927338, 3028674, 3533453, 7066906, 10600359, 21200718]

約数ペア:

[(1, 21200718), (2, 10600359), (3, 7066906), (6, 3533453), (7, 3028674), (11, 1927338), (14, 1514337), (21, 1009558), (22, 963669), (33, 642446), (42, 504779), (66, 321223), (77, 275334), (109, 194502), (154, 137667), (218, 97251), (231, 91778), (327, 64834), (421, 50358), (462, 45889), (654, 32417), (763, 27786), (842, 25179), (1199, 17682), (1263, 16786), (1526, 13893), (2289, 9262), (2398, 8841), (2526, 8393), (2947, 7194), (3597, 5894), (4578, 4631)]