20641185

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15817}}^1$

素因数の和:15857

約数の個数: 24

約数和(自身を含む): 37014120

約数和(自身を除く): 16372935

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 15817, 47451, 79085, 142353, 237255, 458693, 711765, 1376079, 2293465, 4128237, 6880395, 20641185]

約数ペア:

[(1, 20641185), (3, 6880395), (5, 4128237), (9, 2293465), (15, 1376079), (29, 711765), (45, 458693), (87, 237255), (145, 142353), (261, 79085), (435, 47451), (1305, 15817)]