21400135

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{503}}^1$

素因数の和:702

約数の個数: 16

約数和(自身を含む): 26320896

約数和(自身を除く): 4920761

約数列:

[1, 5, 67, 127, 335, 503, 635, 2515, 8509, 33701, 42545, 63881, 168505, 319405, 4280027, 21400135]

約数ペア:

[(1, 21400135), (5, 4280027), (67, 319405), (127, 168505), (335, 63881), (503, 42545), (635, 33701), (2515, 8509)]