20782060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1193}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 47740896

約数和(自身を除く): 26958836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1193, 1340, 1742, 2386, 3484, 4355, 4772, 5965, 8710, 11930, 15509, 17420, 23860, 31018, 62036, 77545, 79931, 155090, 159862, 310180, 319724, 399655, 799310, 1039103, 1598620, 2078206, 4156412, 5195515, 10391030, 20782060]

約数ペア:

[(1, 20782060), (2, 10391030), (4, 5195515), (5, 4156412), (10, 2078206), (13, 1598620), (20, 1039103), (26, 799310), (52, 399655), (65, 319724), (67, 310180), (130, 159862), (134, 155090), (260, 79931), (268, 77545), (335, 62036), (670, 31018), (871, 23860), (1193, 17420), (1340, 15509), (1742, 11930), (2386, 8710), (3484, 5965), (4355, 4772)]