18744621

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:569

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 11668179

約数列:

[1, 3, 7, 19, 21, 57, 109, 133, 327, 399, 431, 763, 1293, 2071, 2289, 3017, 6213, 8189, 9051, 14497, 24567, 43491, 46979, 57323, 140937, 171969, 328853, 892601, 986559, 2677803, 6248207, 18744621]

約数ペア:

[(1, 18744621), (3, 6248207), (7, 2677803), (19, 986559), (21, 892601), (57, 328853), (109, 171969), (133, 140937), (327, 57323), (399, 46979), (431, 43491), (763, 24567), (1293, 14497), (2071, 9051), (2289, 8189), (3017, 6213)]