21756488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4451}}^1$

素因数の和:4517

約数の個数: 32

約数和(自身を含む): 44876160

約数和(自身を除く): 23119672

約数列:

[1, 2, 4, 8, 13, 26, 47, 52, 94, 104, 188, 376, 611, 1222, 2444, 4451, 4888, 8902, 17804, 35608, 57863, 115726, 209197, 231452, 418394, 462904, 836788, 1673576, 2719561, 5439122, 10878244, 21756488]

約数ペア:

[(1, 21756488), (2, 10878244), (4, 5439122), (8, 2719561), (13, 1673576), (26, 836788), (47, 462904), (52, 418394), (94, 231452), (104, 209197), (188, 115726), (376, 57863), (611, 35608), (1222, 17804), (2444, 8902), (4451, 4888)]