26598940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 57812832

約数和(自身を除く): 31213892

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 157, 172, 197, 215, 314, 394, 430, 628, 785, 788, 860, 985, 1570, 1970, 3140, 3940, 6751, 8471, 13502, 16942, 27004, 30929, 33755, 33884, 42355, 61858, 67510, 84710, 123716, 135020, 154645, 169420, 309290, 618580, 1329947, 2659894, 5319788, 6649735, 13299470, 26598940]

約数ペア:

[(1, 26598940), (2, 13299470), (4, 6649735), (5, 5319788), (10, 2659894), (20, 1329947), (43, 618580), (86, 309290), (157, 169420), (172, 154645), (197, 135020), (215, 123716), (314, 84710), (394, 67510), (430, 61858), (628, 42355), (785, 33884), (788, 33755), (860, 30929), (985, 27004), (1570, 16942), (1970, 13502), (3140, 8471), (3940, 6751)]