64218820

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 137668608

約数和(自身を除く): 73449788

約数列:

[1, 2, 4, 5, 10, 20, 127, 131, 193, 254, 262, 386, 508, 524, 635, 655, 772, 965, 1270, 1310, 1930, 2540, 2620, 3860, 16637, 24511, 25283, 33274, 49022, 50566, 66548, 83185, 98044, 101132, 122555, 126415, 166370, 245110, 252830, 332740, 490220, 505660, 3210941, 6421882, 12843764, 16054705, 32109410, 64218820]

約数ペア:

[(1, 64218820), (2, 32109410), (4, 16054705), (5, 12843764), (10, 6421882), (20, 3210941), (127, 505660), (131, 490220), (193, 332740), (254, 252830), (262, 245110), (386, 166370), (508, 126415), (524, 122555), (635, 101132), (655, 98044), (772, 83185), (965, 66548), (1270, 50566), (1310, 49022), (1930, 33274), (2540, 25283), (2620, 24511), (3860, 16637)]