13987365021

素因数分解:

$3^2\times 7^2\times {\mathrm{31717381}}^1$

素因数の和:31717401

約数の個数: 18

約数和(自身を含む): 23502580062

約数和(自身を除く): 9515215041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 31717381, 95152143, 222021667, 285456429, 666065001, 1554151669, 1998195003, 4662455007, 13987365021]

約数ペア:

[(1, 13987365021), (3, 4662455007), (7, 1998195003), (9, 1554151669), (21, 666065001), (49, 285456429), (63, 222021667), (147, 95152143), (441, 31717381)]