18193515

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 30302976

約数和(自身を除く): 12109461

約数列:

[1, 3, 5, 15, 43, 67, 129, 201, 215, 335, 421, 645, 1005, 1263, 2105, 2881, 6315, 8643, 14405, 18103, 28207, 43215, 54309, 84621, 90515, 141035, 271545, 423105, 1212901, 3638703, 6064505, 18193515]

約数ペア:

[(1, 18193515), (3, 6064505), (5, 3638703), (15, 1212901), (43, 423105), (67, 271545), (129, 141035), (201, 90515), (215, 84621), (335, 54309), (421, 43215), (645, 28207), (1005, 18103), (1263, 14405), (2105, 8643), (2881, 6315)]