21371696

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3331}}^1$

素因数の和:3740

約数の個数: 20

約数和(自身を含む): 41523384

約数和(自身を除く): 20151688

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3331, 6416, 6662, 13324, 26648, 53296, 1335731, 2671462, 5342924, 10685848, 21371696]

約数ペア:

[(1, 21371696), (2, 10685848), (4, 5342924), (8, 2671462), (16, 1335731), (401, 53296), (802, 26648), (1604, 13324), (3208, 6662), (3331, 6416)]