21289264

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10477}}^1$

素因数の和:10612

約数の個数: 20

約数和(自身を含む): 41576704

約数和(自身を除く): 20287440

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10477, 20954, 41908, 83816, 167632, 1330579, 2661158, 5322316, 10644632, 21289264]

約数ペア:

[(1, 21289264), (2, 10644632), (4, 5322316), (8, 2661158), (16, 1330579), (127, 167632), (254, 83816), (508, 41908), (1016, 20954), (2032, 10477)]