17981247

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^2$

素因数の和:215

約数の個数: 24

約数和(自身を含む): 25769520

約数和(自身を除く): 7788273

約数列:

[1, 3, 29, 41, 71, 87, 123, 213, 1189, 2059, 2911, 3567, 5041, 6177, 8733, 15123, 84419, 146189, 206681, 253257, 438567, 620043, 5993749, 17981247]

約数ペア:

[(1, 17981247), (3, 5993749), (29, 620043), (41, 438567), (71, 253257), (87, 206681), (123, 146189), (213, 84419), (1189, 15123), (2059, 8733), (2911, 6177), (3567, 5041)]