28821075

素因数分解:

$3^1\times 5^2\times {\mathrm{251}}^1\times {\mathrm{1531}}^1$

素因数の和:1795

約数の個数: 24

約数和(自身を含む): 47871936

約数和(自身を除く): 19050861

約数列:

[1, 3, 5, 15, 25, 75, 251, 753, 1255, 1531, 3765, 4593, 6275, 7655, 18825, 22965, 38275, 114825, 384281, 1152843, 1921405, 5764215, 9607025, 28821075]

約数ペア:

[(1, 28821075), (3, 9607025), (5, 5764215), (15, 1921405), (25, 1152843), (75, 384281), (251, 114825), (753, 38275), (1255, 22965), (1531, 18825), (3765, 7655), (4593, 6275)]