639716

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:120

約数の個数: 48

約数和(自身を含む): 1462272

約数和(自身を除く): 822556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 67, 77, 124, 134, 154, 217, 268, 308, 341, 434, 469, 682, 737, 868, 938, 1364, 1474, 1876, 2077, 2387, 2948, 4154, 4774, 5159, 8308, 9548, 10318, 14539, 20636, 22847, 29078, 45694, 58156, 91388, 159929, 319858, 639716]

約数ペア:

[(1, 639716), (2, 319858), (4, 159929), (7, 91388), (11, 58156), (14, 45694), (22, 29078), (28, 22847), (31, 20636), (44, 14539), (62, 10318), (67, 9548), (77, 8308), (124, 5159), (134, 4774), (154, 4154), (217, 2948), (268, 2387), (308, 2077), (341, 1876), (434, 1474), (469, 1364), (682, 938), (737, 868)]