19992904311

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1\times {\mathrm{1289}}^1$

素因数の和:1839

約数の個数: 32

約数和(自身を含む): 27172972800

約数和(自身を除く): 7180068489

約数列:

[1, 3, 107, 211, 229, 321, 633, 687, 1289, 3867, 22577, 24503, 48319, 67731, 73509, 137923, 144957, 271979, 295181, 413769, 815937, 885543, 5170133, 15510399, 29101753, 31584367, 62283191, 87305259, 94753101, 186849573, 6664301437, 19992904311]

約数ペア:

[(1, 19992904311), (3, 6664301437), (107, 186849573), (211, 94753101), (229, 87305259), (321, 62283191), (633, 31584367), (687, 29101753), (1289, 15510399), (3867, 5170133), (22577, 885543), (24503, 815937), (48319, 413769), (67731, 295181), (73509, 271979), (137923, 144957)]