21137841

素因数分解:

$3^5\times {\mathrm{37}}^1\times {\mathrm{2351}}^1$

素因数の和:2403

約数の個数: 24

約数和(自身を含む): 32532864

約数和(自身を除く): 11395023

約数列:

[1, 3, 9, 27, 37, 81, 111, 243, 333, 999, 2351, 2997, 7053, 8991, 21159, 63477, 86987, 190431, 260961, 571293, 782883, 2348649, 7045947, 21137841]

約数ペア:

[(1, 21137841), (3, 7045947), (9, 2348649), (27, 782883), (37, 571293), (81, 260961), (111, 190431), (243, 86987), (333, 63477), (999, 21159), (2351, 8991), (2997, 7053)]