221561217

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{1693}}^1$

素因数の和:1870

約数の個数: 32

約数和(自身を含む): 339884160

約数和(自身を除く): 118322943

約数列:

[1, 3, 9, 27, 37, 111, 131, 333, 393, 999, 1179, 1693, 3537, 4847, 5079, 14541, 15237, 43623, 45711, 62641, 130869, 187923, 221783, 563769, 665349, 1691307, 1996047, 5988141, 8205971, 24617913, 73853739, 221561217]

約数ペア:

[(1, 221561217), (3, 73853739), (9, 24617913), (27, 8205971), (37, 5988141), (111, 1996047), (131, 1691307), (333, 665349), (393, 563769), (999, 221783), (1179, 187923), (1693, 130869), (3537, 62641), (4847, 45711), (5079, 43623), (14541, 15237)]