20485790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4259}}^1$

素因数の和:4316

約数の個数: 32

約数和(自身を含む): 40793760

約数和(自身を除く): 20307970

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4259, 4810, 8518, 21295, 42590, 55367, 110734, 157583, 276835, 315166, 553670, 787915, 1575830, 2048579, 4097158, 10242895, 20485790]

約数ペア:

[(1, 20485790), (2, 10242895), (5, 4097158), (10, 2048579), (13, 1575830), (26, 787915), (37, 553670), (65, 315166), (74, 276835), (130, 157583), (185, 110734), (370, 55367), (481, 42590), (962, 21295), (2405, 8518), (4259, 4810)]