20745435

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{877}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 35400960

約数和(自身を除く): 14655525

約数列:

[1, 3, 5, 15, 19, 57, 83, 95, 249, 285, 415, 877, 1245, 1577, 2631, 4385, 4731, 7885, 13155, 16663, 23655, 49989, 72791, 83315, 218373, 249945, 363955, 1091865, 1383029, 4149087, 6915145, 20745435]

約数ペア:

[(1, 20745435), (3, 6915145), (5, 4149087), (15, 1383029), (19, 1091865), (57, 363955), (83, 249945), (95, 218373), (249, 83315), (285, 72791), (415, 49989), (877, 23655), (1245, 16663), (1577, 13155), (2631, 7885), (4385, 4731)]