21962416

素因数分解:

$2^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1249}}^1$

素因数の和:1421

約数の個数: 40

約数和(自身を含む): 48980000

約数和(自身を除く): 27017584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 157, 314, 628, 1099, 1249, 1256, 2198, 2498, 2512, 4396, 4996, 8743, 8792, 9992, 17486, 17584, 19984, 34972, 69944, 139888, 196093, 392186, 784372, 1372651, 1568744, 2745302, 3137488, 5490604, 10981208, 21962416]

約数ペア:

[(1, 21962416), (2, 10981208), (4, 5490604), (7, 3137488), (8, 2745302), (14, 1568744), (16, 1372651), (28, 784372), (56, 392186), (112, 196093), (157, 139888), (314, 69944), (628, 34972), (1099, 19984), (1249, 17584), (1256, 17486), (2198, 9992), (2498, 8792), (2512, 8743), (4396, 4996)]