21335865

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^2\times {\mathrm{1039}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 35118720

約数和(自身を除く): 13782855

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 1039, 1369, 3117, 4107, 5195, 6845, 15585, 20535, 38443, 115329, 192215, 576645, 1422391, 4267173, 7111955, 21335865]

約数ペア:

[(1, 21335865), (3, 7111955), (5, 4267173), (15, 1422391), (37, 576645), (111, 192215), (185, 115329), (555, 38443), (1039, 20535), (1369, 15585), (3117, 6845), (4107, 5195)]