20780921

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{751}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 24545280

約数和(自身を除く): 3764359

約数列:

[1, 7, 59, 67, 413, 469, 751, 3953, 5257, 27671, 44309, 50317, 310163, 352219, 2968703, 20780921]

約数ペア:

[(1, 20780921), (7, 2968703), (59, 352219), (67, 310163), (413, 50317), (469, 44309), (751, 27671), (3953, 5257)]