20970235

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 29917440

約数和(自身を除く): 8947205

約数列:

[1, 5, 11, 13, 55, 65, 139, 143, 211, 695, 715, 1055, 1529, 1807, 2321, 2743, 7645, 9035, 11605, 13715, 19877, 29329, 30173, 99385, 146645, 150865, 322619, 381277, 1613095, 1906385, 4194047, 20970235]

約数ペア:

[(1, 20970235), (5, 4194047), (11, 1906385), (13, 1613095), (55, 381277), (65, 322619), (139, 150865), (143, 146645), (211, 99385), (695, 30173), (715, 29329), (1055, 19877), (1529, 13715), (1807, 11605), (2321, 9035), (2743, 7645)]