20665964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 41395200

約数和(自身を除く): 20729236

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 109, 124, 139, 218, 278, 341, 436, 556, 682, 1199, 1364, 1529, 2398, 3058, 3379, 4309, 4796, 6116, 6758, 8618, 13516, 15151, 17236, 30302, 37169, 47399, 60604, 74338, 94798, 148676, 166661, 189596, 333322, 469681, 666644, 939362, 1878724, 5166491, 10332982, 20665964]

約数ペア:

[(1, 20665964), (2, 10332982), (4, 5166491), (11, 1878724), (22, 939362), (31, 666644), (44, 469681), (62, 333322), (109, 189596), (124, 166661), (139, 148676), (218, 94798), (278, 74338), (341, 60604), (436, 47399), (556, 37169), (682, 30302), (1199, 17236), (1364, 15151), (1529, 13516), (2398, 8618), (3058, 6758), (3379, 6116), (4309, 4796)]