21855567

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 32369920

約数和(自身を除く): 10514353

約数列:

[1, 3, 19, 37, 43, 57, 111, 129, 241, 703, 723, 817, 1591, 2109, 2451, 4579, 4773, 8917, 10363, 13737, 26751, 30229, 31089, 90687, 169423, 196897, 383431, 508269, 590691, 1150293, 7285189, 21855567]

約数ペア:

[(1, 21855567), (3, 7285189), (19, 1150293), (37, 590691), (43, 508269), (57, 383431), (111, 196897), (129, 169423), (241, 90687), (703, 31089), (723, 30229), (817, 26751), (1591, 13737), (2109, 10363), (2451, 8917), (4579, 4773)]