21098187

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4021}}^1$

素因数の和:4091

約数の個数: 24

約数和(自身を含む): 33881328

約数和(自身を除く): 12783141

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 4021, 5247, 12063, 36189, 44231, 132693, 213113, 398079, 639339, 1918017, 2344243, 7032729, 21098187]

約数ペア:

[(1, 21098187), (3, 7032729), (9, 2344243), (11, 1918017), (33, 639339), (53, 398079), (99, 213113), (159, 132693), (477, 44231), (583, 36189), (1749, 12063), (4021, 5247)]