21990288

素因数分解:

$2^4\times 3^1\times {\mathrm{97}}^1\times {\mathrm{4723}}^1$

素因数の和:4831

約数の個数: 40

約数和(自身を含む): 57406048

約数和(自身を除く): 35415760

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 97, 194, 291, 388, 582, 776, 1164, 1552, 2328, 4656, 4723, 9446, 14169, 18892, 28338, 37784, 56676, 75568, 113352, 226704, 458131, 916262, 1374393, 1832524, 2748786, 3665048, 5497572, 7330096, 10995144, 21990288]

約数ペア:

[(1, 21990288), (2, 10995144), (3, 7330096), (4, 5497572), (6, 3665048), (8, 2748786), (12, 1832524), (16, 1374393), (24, 916262), (48, 458131), (97, 226704), (194, 113352), (291, 75568), (388, 56676), (582, 37784), (776, 28338), (1164, 18892), (1552, 14169), (2328, 9446), (4656, 4723)]