20988045

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11959}}^1$

素因数の和:11986

約数の個数: 32

約数和(自身を含む): 40185600

約数和(自身を除く): 19197555

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11959, 35877, 59795, 107631, 155467, 179385, 322893, 466401, 538155, 777335, 1399203, 1614465, 2332005, 4197609, 6996015, 20988045]

約数ペア:

[(1, 20988045), (3, 6996015), (5, 4197609), (9, 2332005), (13, 1614465), (15, 1399203), (27, 777335), (39, 538155), (45, 466401), (65, 322893), (117, 179385), (135, 155467), (195, 107631), (351, 59795), (585, 35877), (1755, 11959)]