21072808

素因数分解:

$2^3\times {\mathrm{31}}^2\times {\mathrm{2741}}^1$

素因数の和:2809

約数の個数: 24

約数和(自身を含む): 40842090

約数和(自身を除く): 19769282

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 961, 1922, 2741, 3844, 5482, 7688, 10964, 21928, 84971, 169942, 339884, 679768, 2634101, 5268202, 10536404, 21072808]

約数ペア:

[(1, 21072808), (2, 10536404), (4, 5268202), (8, 2634101), (31, 679768), (62, 339884), (124, 169942), (248, 84971), (961, 21928), (1922, 10964), (2741, 7688), (3844, 5482)]