20905066

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 40075560

約数和(自身を除く): 19170494

約数列:

[1, 2, 7, 13, 14, 26, 49, 61, 91, 98, 122, 182, 269, 427, 538, 637, 793, 854, 1274, 1586, 1883, 2989, 3497, 3766, 5551, 5978, 6994, 11102, 13181, 16409, 24479, 26362, 32818, 38857, 48958, 77714, 114863, 171353, 213317, 229726, 342706, 426634, 804041, 1493219, 1608082, 2986438, 10452533, 20905066]

約数ペア:

[(1, 20905066), (2, 10452533), (7, 2986438), (13, 1608082), (14, 1493219), (26, 804041), (49, 426634), (61, 342706), (91, 229726), (98, 213317), (122, 171353), (182, 114863), (269, 77714), (427, 48958), (538, 38857), (637, 32818), (793, 26362), (854, 24479), (1274, 16409), (1586, 13181), (1883, 11102), (2989, 6994), (3497, 5978), (3766, 5551)]