21131856

素因数分解:

$2^4\times 3^2\times {\mathrm{146749}}^1$

素因数の和:146763

約数の個数: 30

約数和(自身を含む): 59140250

約数和(自身を除く): 38008394

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 146749, 293498, 440247, 586996, 880494, 1173992, 1320741, 1760988, 2347984, 2641482, 3521976, 5282964, 7043952, 10565928, 21131856]

約数ペア:

[(1, 21131856), (2, 10565928), (3, 7043952), (4, 5282964), (6, 3521976), (8, 2641482), (9, 2347984), (12, 1760988), (16, 1320741), (18, 1173992), (24, 880494), (36, 586996), (48, 440247), (72, 293498), (144, 146749)]