21164605

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54973}}^1$

素因数の和:54996

約数の個数: 16

約数和(自身を含む): 31665024

約数和(自身を除く): 10500419

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54973, 274865, 384811, 604703, 1924055, 3023515, 4232921, 21164605]

約数ペア:

[(1, 21164605), (5, 4232921), (7, 3023515), (11, 1924055), (35, 604703), (55, 384811), (77, 274865), (385, 54973)]