18479979

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1489}}^1$

素因数の和:1699

約数の個数: 24

約数和(自身を含む): 30682080

約数和(自身を除く): 12202101

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1489, 1773, 4137, 4467, 10423, 12411, 13401, 31269, 93807, 293333, 879999, 2053331, 2639997, 6159993, 18479979]

約数ペア:

[(1, 18479979), (3, 6159993), (7, 2639997), (9, 2053331), (21, 879999), (63, 293333), (197, 93807), (591, 31269), (1379, 13401), (1489, 12411), (1773, 10423), (4137, 4467)]