21470380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56501}}^1$

素因数の和:56529

約数の個数: 24

約数和(自身を含む): 47461680

約数和(自身を除く): 25991300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56501, 113002, 226004, 282505, 565010, 1073519, 1130020, 2147038, 4294076, 5367595, 10735190, 21470380]

約数ペア:

[(1, 21470380), (2, 10735190), (4, 5367595), (5, 4294076), (10, 2147038), (19, 1130020), (20, 1073519), (38, 565010), (76, 282505), (95, 226004), (190, 113002), (380, 56501)]