81067600

素因数分解:

$2^4\times 5^2\times {\mathrm{389}}^1\times {\mathrm{521}}^1$

素因数の和:928

約数の個数: 60

約数和(自身を含む): 195640380

約数和(自身を除く): 114572780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 389, 400, 521, 778, 1042, 1556, 1945, 2084, 2605, 3112, 3890, 4168, 5210, 6224, 7780, 8336, 9725, 10420, 13025, 15560, 19450, 20840, 26050, 31120, 38900, 41680, 52100, 77800, 104200, 155600, 202669, 208400, 405338, 810676, 1013345, 1621352, 2026690, 3242704, 4053380, 5066725, 8106760, 10133450, 16213520, 20266900, 40533800, 81067600]

約数ペア:

[(1, 81067600), (2, 40533800), (4, 20266900), (5, 16213520), (8, 10133450), (10, 8106760), (16, 5066725), (20, 4053380), (25, 3242704), (40, 2026690), (50, 1621352), (80, 1013345), (100, 810676), (200, 405338), (389, 208400), (400, 202669), (521, 155600), (778, 104200), (1042, 77800), (1556, 52100), (1945, 41680), (2084, 38900), (2605, 31120), (3112, 26050), (3890, 20840), (4168, 19450), (5210, 15560), (6224, 13025), (7780, 10420), (8336, 9725)]