21791768

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{337}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 41979600

約数和(自身を除く): 20187832

約数列:

[1, 2, 4, 8, 59, 118, 137, 236, 274, 337, 472, 548, 674, 1096, 1348, 2696, 8083, 16166, 19883, 32332, 39766, 46169, 64664, 79532, 92338, 159064, 184676, 369352, 2723971, 5447942, 10895884, 21791768]

約数ペア:

[(1, 21791768), (2, 10895884), (4, 5447942), (8, 2723971), (59, 369352), (118, 184676), (137, 159064), (236, 92338), (274, 79532), (337, 64664), (472, 46169), (548, 39766), (674, 32332), (1096, 19883), (1348, 16166), (2696, 8083)]