261625360

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{6277}}^1$

素因数の和:6811

約数の個数: 40

約数和(自身を含む): 609543576

約数和(自身を除く): 347918216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 1042, 2084, 2605, 4168, 5210, 6277, 8336, 10420, 12554, 20840, 25108, 31385, 41680, 50216, 62770, 100432, 125540, 251080, 502160, 3270317, 6540634, 13081268, 16351585, 26162536, 32703170, 52325072, 65406340, 130812680, 261625360]

約数ペア:

[(1, 261625360), (2, 130812680), (4, 65406340), (5, 52325072), (8, 32703170), (10, 26162536), (16, 16351585), (20, 13081268), (40, 6540634), (80, 3270317), (521, 502160), (1042, 251080), (2084, 125540), (2605, 100432), (4168, 62770), (5210, 50216), (6277, 41680), (8336, 31385), (10420, 25108), (12554, 20840)]