20978804

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68113}}^1$

素因数の和:68135

約数の個数: 24

約数和(自身を含む): 45772608

約数和(自身を除く): 24793804

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68113, 136226, 272452, 476791, 749243, 953582, 1498486, 1907164, 2996972, 5244701, 10489402, 20978804]

約数ペア:

[(1, 20978804), (2, 10489402), (4, 5244701), (7, 2996972), (11, 1907164), (14, 1498486), (22, 953582), (28, 749243), (44, 476791), (77, 272452), (154, 136226), (308, 68113)]