21199784

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{1171}}^1$

素因数の和:1281

約数の個数: 32

約数和(自身を含む): 41629440

約数和(自身を除く): 20429656

約数列:

[1, 2, 4, 8, 31, 62, 73, 124, 146, 248, 292, 584, 1171, 2263, 2342, 4526, 4684, 9052, 9368, 18104, 36301, 72602, 85483, 145204, 170966, 290408, 341932, 683864, 2649973, 5299946, 10599892, 21199784]

約数ペア:

[(1, 21199784), (2, 10599892), (4, 5299946), (8, 2649973), (31, 683864), (62, 341932), (73, 290408), (124, 170966), (146, 145204), (248, 85483), (292, 72602), (584, 36301), (1171, 18104), (2263, 9368), (2342, 9052), (4526, 4684)]