26520140

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 57480192

約数和(自身を除く): 30960052

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 127, 197, 212, 254, 265, 394, 508, 530, 635, 788, 985, 1060, 1270, 1970, 2540, 3940, 6731, 10441, 13462, 20882, 25019, 26924, 33655, 41764, 50038, 52205, 67310, 100076, 104410, 125095, 134620, 208820, 250190, 500380, 1326007, 2652014, 5304028, 6630035, 13260070, 26520140]

約数ペア:

[(1, 26520140), (2, 13260070), (4, 6630035), (5, 5304028), (10, 2652014), (20, 1326007), (53, 500380), (106, 250190), (127, 208820), (197, 134620), (212, 125095), (254, 104410), (265, 100076), (394, 67310), (508, 52205), (530, 50038), (635, 41764), (788, 33655), (985, 26924), (1060, 25019), (1270, 20882), (1970, 13462), (2540, 10441), (3940, 6731)]