21557187

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{467}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 32707584

約数和(自身を除く): 11150397

約数列:

[1, 3, 9, 23, 69, 207, 223, 467, 669, 1401, 2007, 4203, 5129, 10741, 15387, 32223, 46161, 96669, 104141, 312423, 937269, 2395243, 7185729, 21557187]

約数ペア:

[(1, 21557187), (3, 7185729), (9, 2395243), (23, 937269), (69, 312423), (207, 104141), (223, 96669), (467, 46161), (669, 32223), (1401, 15387), (2007, 10741), (4203, 5129)]