21281264

素因数分解:

$2^4\times {\mathrm{241}}^1\times {\mathrm{5519}}^1$

素因数の和:5768

約数の個数: 20

約数和(自身を含む): 41411040

約数和(自身を除く): 20129776

約数列:

[1, 2, 4, 8, 16, 241, 482, 964, 1928, 3856, 5519, 11038, 22076, 44152, 88304, 1330079, 2660158, 5320316, 10640632, 21281264]

約数ペア:

[(1, 21281264), (2, 10640632), (4, 5320316), (8, 2660158), (16, 1330079), (241, 88304), (482, 44152), (964, 22076), (1928, 11038), (3856, 5519)]