21178796

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1585

約数の個数: 24

約数和(自身を含む): 38419920

約数和(自身を除く): 17241124

約数列:

[1, 2, 4, 41, 82, 89, 164, 178, 356, 1451, 2902, 3649, 5804, 7298, 14596, 59491, 118982, 129139, 237964, 258278, 516556, 5294699, 10589398, 21178796]

約数ペア:

[(1, 21178796), (2, 10589398), (4, 5294699), (41, 516556), (82, 258278), (89, 237964), (164, 129139), (178, 118982), (356, 59491), (1451, 14596), (2902, 7298), (3649, 5804)]