21405566

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{349}}^1$

素因数の和:708

約数の個数: 32

約数和(自身を含む): 39748800

約数和(自身を除く): 18343234

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 337, 349, 674, 698, 2359, 2443, 4381, 4537, 4718, 4886, 8762, 9074, 30667, 31759, 61334, 63518, 117613, 235226, 823291, 1528969, 1646582, 3057938, 10702783, 21405566]

約数ペア:

[(1, 21405566), (2, 10702783), (7, 3057938), (13, 1646582), (14, 1528969), (26, 823291), (91, 235226), (182, 117613), (337, 63518), (349, 61334), (674, 31759), (698, 30667), (2359, 9074), (2443, 8762), (4381, 4886), (4537, 4718)]