20078091439

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1\times {\mathrm{2531}}^1$

素因数の和:2971

約数の個数: 32

約数和(自身を含む): 23957176320

約数和(自身を除く): 3879084881

約数列:

[1, 7, 31, 139, 217, 263, 973, 1841, 2531, 4309, 8153, 17717, 30163, 36557, 57071, 78461, 255899, 351809, 549227, 665653, 1133267, 2462663, 4659571, 7932869, 10906079, 20635243, 76342553, 92525767, 144446701, 647680369, 2868298777, 20078091439]

約数ペア:

[(1, 20078091439), (7, 2868298777), (31, 647680369), (139, 144446701), (217, 92525767), (263, 76342553), (973, 20635243), (1841, 10906079), (2531, 7932869), (4309, 4659571), (8153, 2462663), (17717, 1133267), (30163, 665653), (36557, 549227), (57071, 351809), (78461, 255899)]