28385715

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{727}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 48222720

約数和(自身を除く): 19837005

約数列:

[1, 3, 5, 15, 19, 57, 95, 137, 285, 411, 685, 727, 2055, 2181, 2603, 3635, 7809, 10905, 13015, 13813, 39045, 41439, 69065, 99599, 207195, 298797, 497995, 1493985, 1892381, 5677143, 9461905, 28385715]

約数ペア:

[(1, 28385715), (3, 9461905), (5, 5677143), (15, 1892381), (19, 1493985), (57, 497995), (95, 298797), (137, 207195), (285, 99599), (411, 69065), (685, 41439), (727, 39045), (2055, 13813), (2181, 13015), (2603, 10905), (3635, 7809)]