21455037

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15581}}^1$

素因数の和:15610

約数の個数: 20

約数和(自身を含む): 33937596

約数和(自身を除く): 12482559

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15581, 46743, 140229, 264877, 420687, 794631, 1262061, 2383893, 7151679, 21455037]

約数ペア:

[(1, 21455037), (3, 7151679), (9, 2383893), (17, 1262061), (27, 794631), (51, 420687), (81, 264877), (153, 140229), (459, 46743), (1377, 15581)]