261979201

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{20549}}^1$

素因数の和:20640

約数の個数: 16

約数和(自身を含む): 305784000

約数和(自身を除く): 43804799

約数列:

[1, 11, 19, 61, 209, 671, 1159, 12749, 20549, 226039, 390431, 1253489, 4294741, 13788379, 23816291, 261979201]

約数ペア:

[(1, 261979201), (11, 23816291), (19, 13788379), (61, 4294741), (209, 1253489), (671, 390431), (1159, 226039), (12749, 20549)]