20921698

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78653}}^1$

素因数の和:78681

約数の個数: 16

約数和(自身を含む): 37753920

約数和(自身を除く): 16832222

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78653, 157306, 550571, 1101142, 1494407, 2988814, 10460849, 20921698]

約数ペア:

[(1, 20921698), (2, 10460849), (7, 2988814), (14, 1494407), (19, 1101142), (38, 550571), (133, 157306), (266, 78653)]