20715045

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2591}}^1$

素因数の和:2653

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 15863259

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2591, 2665, 7773, 7995, 12955, 33683, 38865, 101049, 106231, 168415, 318693, 505245, 531155, 1381003, 1593465, 4143009, 6905015, 20715045]

約数ペア:

[(1, 20715045), (3, 6905015), (5, 4143009), (13, 1593465), (15, 1381003), (39, 531155), (41, 505245), (65, 318693), (123, 168415), (195, 106231), (205, 101049), (533, 38865), (615, 33683), (1599, 12955), (2591, 7995), (2665, 7773)]