71990163

素因数分解:

$3^2\times 7^2\times {\mathrm{163243}}^1$

素因数の和:163263

約数の個数: 18

約数和(自身を含む): 120963804

約数和(自身を除く): 48973641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 163243, 489729, 1142701, 1469187, 3428103, 7998907, 10284309, 23996721, 71990163]

約数ペア:

[(1, 71990163), (3, 23996721), (7, 10284309), (9, 7998907), (21, 3428103), (49, 1469187), (63, 1142701), (147, 489729), (441, 163243)]