16721367

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:144

約数の個数: 32

約数和(自身を含む): 25132800

約数和(自身を除く): 8411433

約数列:

[1, 3, 13, 39, 43, 59, 129, 169, 177, 507, 559, 767, 1677, 2197, 2301, 2537, 6591, 7267, 7611, 9971, 21801, 29913, 32981, 94471, 98943, 129623, 283413, 388869, 428753, 1286259, 5573789, 16721367]

約数ペア:

[(1, 16721367), (3, 5573789), (13, 1286259), (39, 428753), (43, 388869), (59, 283413), (129, 129623), (169, 98943), (177, 94471), (507, 32981), (559, 29913), (767, 21801), (1677, 9971), (2197, 7611), (2301, 7267), (2537, 6591)]