21455469

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1861}}^1$

素因数の和:1938

約数の個数: 32

約数和(自身を含む): 36942080

約数和(自身を除く): 15486611

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1647, 1861, 3843, 5583, 11529, 13027, 16749, 39081, 50247, 113521, 117243, 340563, 351729, 794647, 1021689, 2383941, 3065067, 7151823, 21455469]

約数ペア:

[(1, 21455469), (3, 7151823), (7, 3065067), (9, 2383941), (21, 1021689), (27, 794647), (61, 351729), (63, 340563), (183, 117243), (189, 113521), (427, 50247), (549, 39081), (1281, 16749), (1647, 13027), (1861, 11529), (3843, 5583)]