21242512

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3413}}^1$

素因数の和:3810

約数の個数: 20

約数和(自身を含む): 41275260

約数和(自身を除く): 20032748

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3413, 6224, 6826, 13652, 27304, 54608, 1327657, 2655314, 5310628, 10621256, 21242512]

約数ペア:

[(1, 21242512), (2, 10621256), (4, 5310628), (8, 2655314), (16, 1327657), (389, 54608), (778, 27304), (1556, 13652), (3112, 6826), (3413, 6224)]