21584145

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{509}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 37895040

約数和(自身を除く): 16310895

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 257, 509, 771, 1285, 1527, 2545, 2827, 3855, 5599, 7635, 8481, 14135, 16797, 27995, 42405, 83985, 130813, 392439, 654065, 1438943, 1962195, 4316829, 7194715, 21584145]

約数ペア:

[(1, 21584145), (3, 7194715), (5, 4316829), (11, 1962195), (15, 1438943), (33, 654065), (55, 392439), (165, 130813), (257, 83985), (509, 42405), (771, 27995), (1285, 16797), (1527, 14135), (2545, 8481), (2827, 7635), (3855, 5599)]