21123982

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:528

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 15371378

約数列:

[1, 2, 11, 22, 23, 46, 109, 218, 253, 383, 506, 766, 1199, 2398, 2507, 4213, 5014, 8426, 8809, 17618, 27577, 41747, 55154, 83494, 96899, 193798, 459217, 918434, 960181, 1920362, 10561991, 21123982]

約数ペア:

[(1, 21123982), (2, 10561991), (11, 1920362), (22, 960181), (23, 918434), (46, 459217), (109, 193798), (218, 96899), (253, 83494), (383, 55154), (506, 41747), (766, 27577), (1199, 17618), (2398, 8809), (2507, 8426), (4213, 5014)]