21478075

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 28371200

約数和(自身を除く): 6893125

約数列:

[1, 5, 19, 25, 95, 103, 439, 475, 515, 1957, 2195, 2575, 8341, 9785, 10975, 41705, 45217, 48925, 208525, 226085, 859123, 1130425, 4295615, 21478075]

約数ペア:

[(1, 21478075), (5, 4295615), (19, 1130425), (25, 859123), (95, 226085), (103, 208525), (439, 48925), (475, 45217), (515, 41705), (1957, 10975), (2195, 9785), (2575, 8341)]