21780453590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{2137}}^1\times {\mathrm{145601}}^1$

素因数の和:147752

約数の個数: 32

約数和(自身を含む): 44826778944

約数和(自身を除く): 23046325354

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 2137, 4274, 10685, 14959, 21370, 29918, 74795, 145601, 149590, 291202, 728005, 1019207, 1456010, 2038414, 5096035, 10192070, 311149337, 622298674, 1555746685, 2178045359, 3111493370, 4356090718, 10890226795, 21780453590]

約数ペア:

[(1, 21780453590), (2, 10890226795), (5, 4356090718), (7, 3111493370), (10, 2178045359), (14, 1555746685), (35, 622298674), (70, 311149337), (2137, 10192070), (4274, 5096035), (10685, 2038414), (14959, 1456010), (21370, 1019207), (29918, 728005), (74795, 291202), (145601, 149590)]