20745790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3011}}^1$

素因数の和:3084

約数の個数: 32

約数和(自身を含む): 40987296

約数和(自身を除く): 20241506

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3011, 3445, 6022, 6890, 15055, 30110, 39143, 78286, 159583, 195715, 319166, 391430, 797915, 1595830, 2074579, 4149158, 10372895, 20745790]

約数ペア:

[(1, 20745790), (2, 10372895), (5, 4149158), (10, 2074579), (13, 1595830), (26, 797915), (53, 391430), (65, 319166), (106, 195715), (130, 159583), (265, 78286), (530, 39143), (689, 30110), (1378, 15055), (3011, 6890), (3445, 6022)]