21589778

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67049}}^1$

素因数の和:67081

約数の個数: 16

約数和(自身を含む): 38620800

約数和(自身を除く): 17031022

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 67049, 134098, 469343, 938686, 1542127, 3084254, 10794889, 21589778]

約数ペア:

[(1, 21589778), (2, 10794889), (7, 3084254), (14, 1542127), (23, 938686), (46, 469343), (161, 134098), (322, 67049)]