21340774

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{2393}}^1$

素因数の和:2429

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 18878426

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 343, 637, 686, 1274, 2393, 4459, 4786, 8918, 16751, 31109, 33502, 62218, 117257, 217763, 234514, 435526, 820799, 1524341, 1641598, 3048682, 10670387, 21340774]

約数ペア:

[(1, 21340774), (2, 10670387), (7, 3048682), (13, 1641598), (14, 1524341), (26, 820799), (49, 435526), (91, 234514), (98, 217763), (182, 117257), (343, 62218), (637, 33502), (686, 31109), (1274, 16751), (2393, 8918), (4459, 4786)]