21275778891

素因数分解:

$3^1\times {\mathrm{389}}^1\times {\mathrm{1031}}^1\times {\mathrm{17683}}^1$

素因数の和:19106

約数の個数: 16

約数和(自身を含む): 28469825280

約数和(自身を除く): 7194046389

約数列:

[1, 3, 389, 1031, 1167, 3093, 17683, 53049, 401059, 1203177, 6878687, 18231173, 20636061, 54693519, 7091926297, 21275778891]

約数ペア:

[(1, 21275778891), (3, 7091926297), (389, 54693519), (1031, 20636061), (1167, 18231173), (3093, 6878687), (17683, 1203177), (53049, 401059)]