21512848

素因数分解:

$2^4\times 7^1\times {\mathrm{401}}^1\times {\mathrm{479}}^1$

素因数の和:895

約数の個数: 40

約数和(自身を含む): 47854080

約数和(自身を除く): 26341232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 401, 479, 802, 958, 1604, 1916, 2807, 3208, 3353, 3832, 5614, 6416, 6706, 7664, 11228, 13412, 22456, 26824, 44912, 53648, 192079, 384158, 768316, 1344553, 1536632, 2689106, 3073264, 5378212, 10756424, 21512848]

約数ペア:

[(1, 21512848), (2, 10756424), (4, 5378212), (7, 3073264), (8, 2689106), (14, 1536632), (16, 1344553), (28, 768316), (56, 384158), (112, 192079), (401, 53648), (479, 44912), (802, 26824), (958, 22456), (1604, 13412), (1916, 11228), (2807, 7664), (3208, 6706), (3353, 6416), (3832, 5614)]