16661875

素因数分解:

$5^4\times {\mathrm{53}}^1\times {\mathrm{503}}^1$

素因数の和:576

約数の個数: 20

約数和(自身を含む): 21255696

約数和(自身を除く): 4593821

約数列:

[1, 5, 25, 53, 125, 265, 503, 625, 1325, 2515, 6625, 12575, 26659, 33125, 62875, 133295, 314375, 666475, 3332375, 16661875]

約数ペア:

[(1, 16661875), (5, 3332375), (25, 666475), (53, 314375), (125, 133295), (265, 62875), (503, 33125), (625, 26659), (1325, 12575), (2515, 6625)]