21809264

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71741}}^1$

素因数の和:71768

約数の個数: 20

約数和(自身を含む): 44480040

約数和(自身を除く): 22670776

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71741, 143482, 286964, 573928, 1147856, 1363079, 2726158, 5452316, 10904632, 21809264]

約数ペア:

[(1, 21809264), (2, 10904632), (4, 5452316), (8, 2726158), (16, 1363079), (19, 1147856), (38, 573928), (76, 286964), (152, 143482), (304, 71741)]