20491185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 39626496

約数和(自身を除く): 19135311

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 41, 55, 65, 123, 143, 165, 195, 205, 233, 429, 451, 533, 615, 699, 715, 1165, 1353, 1599, 2145, 2255, 2563, 2665, 3029, 3495, 5863, 6765, 7689, 7995, 9087, 9553, 12815, 15145, 17589, 28659, 29315, 33319, 38445, 45435, 47765, 87945, 99957, 105083, 124189, 143295, 166595, 315249, 372567, 499785, 525415, 620945, 1366079, 1576245, 1862835, 4098237, 6830395, 20491185]

約数ペア:

[(1, 20491185), (3, 6830395), (5, 4098237), (11, 1862835), (13, 1576245), (15, 1366079), (33, 620945), (39, 525415), (41, 499785), (55, 372567), (65, 315249), (123, 166595), (143, 143295), (165, 124189), (195, 105083), (205, 99957), (233, 87945), (429, 47765), (451, 45435), (533, 38445), (615, 33319), (699, 29315), (715, 28659), (1165, 17589), (1353, 15145), (1599, 12815), (2145, 9553), (2255, 9087), (2563, 7995), (2665, 7689), (3029, 6765), (3495, 5863)]