20797790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1019}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 40612320

約数和(自身を除く): 19814530

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 1019, 1570, 2038, 2041, 4082, 5095, 10190, 10205, 13247, 20410, 26494, 66235, 132470, 159983, 319966, 799915, 1599830, 2079779, 4159558, 10398895, 20797790]

約数ペア:

[(1, 20797790), (2, 10398895), (5, 4159558), (10, 2079779), (13, 1599830), (26, 799915), (65, 319966), (130, 159983), (157, 132470), (314, 66235), (785, 26494), (1019, 20410), (1570, 13247), (2038, 10205), (2041, 10190), (4082, 5095)]