20981308904

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{1129}}^1\times {\mathrm{122263}}^1$

素因数の和:123417

約数の個数: 32

約数和(自身を含む): 41447496000

約数和(自身を除く): 20466187096

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 1129, 2258, 4516, 9032, 21451, 42902, 85804, 122263, 171608, 244526, 489052, 978104, 2322997, 4645994, 9291988, 18583976, 138034927, 276069854, 552139708, 1104279416, 2622663613, 5245327226, 10490654452, 20981308904]

約数ペア:

[(1, 20981308904), (2, 10490654452), (4, 5245327226), (8, 2622663613), (19, 1104279416), (38, 552139708), (76, 276069854), (152, 138034927), (1129, 18583976), (2258, 9291988), (4516, 4645994), (9032, 2322997), (21451, 978104), (42902, 489052), (85804, 244526), (122263, 171608)]