256936220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{7867}}^1$

素因数の和:7970

約数の個数: 48

約数和(自身を含む): 571027968

約数和(自身を除く): 314091748

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 710, 1420, 1633, 3266, 6532, 7867, 8165, 15734, 16330, 31468, 32660, 39335, 78670, 157340, 180941, 361882, 558557, 723764, 904705, 1117114, 1809410, 2234228, 2792785, 3618820, 5585570, 11171140, 12846811, 25693622, 51387244, 64234055, 128468110, 256936220]

約数ペア:

[(1, 256936220), (2, 128468110), (4, 64234055), (5, 51387244), (10, 25693622), (20, 12846811), (23, 11171140), (46, 5585570), (71, 3618820), (92, 2792785), (115, 2234228), (142, 1809410), (230, 1117114), (284, 904705), (355, 723764), (460, 558557), (710, 361882), (1420, 180941), (1633, 157340), (3266, 78670), (6532, 39335), (7867, 32660), (8165, 31468), (15734, 16330)]