19665514981

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{607}}^1\times {\mathrm{863}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 23399497728

約数和(自身を除く): 3733982747

約数列:

[1, 7, 31, 173, 217, 607, 863, 1211, 4249, 5363, 6041, 18817, 26753, 37541, 105011, 131719, 149299, 187271, 523841, 735077, 1045093, 3255341, 3666887, 4628269, 16239071, 22787387, 32397883, 90624493, 113673497, 634371451, 2809359283, 19665514981]

約数ペア:

[(1, 19665514981), (7, 2809359283), (31, 634371451), (173, 113673497), (217, 90624493), (607, 32397883), (863, 22787387), (1211, 16239071), (4249, 4628269), (5363, 3666887), (6041, 3255341), (18817, 1045093), (26753, 735077), (37541, 523841), (105011, 187271), (131719, 149299)]