18385983

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 33935616

約数和(自身を除く): 15549633

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 63, 77, 99, 129, 231, 301, 387, 473, 617, 693, 903, 1419, 1851, 2709, 3311, 4257, 4319, 5553, 6787, 9933, 12957, 20361, 26531, 29799, 38871, 47509, 61083, 79593, 142527, 185717, 238779, 291841, 427581, 557151, 875523, 1671453, 2042887, 2626569, 6128661, 18385983]

約数ペア:

[(1, 18385983), (3, 6128661), (7, 2626569), (9, 2042887), (11, 1671453), (21, 875523), (33, 557151), (43, 427581), (63, 291841), (77, 238779), (99, 185717), (129, 142527), (231, 79593), (301, 61083), (387, 47509), (473, 38871), (617, 29799), (693, 26531), (903, 20361), (1419, 12957), (1851, 9933), (2709, 6787), (3311, 5553), (4257, 4319)]