21901672

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1069}}^1$

素因数の和:1285

約数の個数: 32

約数和(自身を含む): 44490600

約数和(自身を除く): 22588928

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 1069, 1576, 2138, 2561, 4276, 5122, 8552, 10244, 13897, 20488, 27794, 55588, 111176, 210593, 421186, 842372, 1684744, 2737709, 5475418, 10950836, 21901672]

約数ペア:

[(1, 21901672), (2, 10950836), (4, 5475418), (8, 2737709), (13, 1684744), (26, 842372), (52, 421186), (104, 210593), (197, 111176), (394, 55588), (788, 27794), (1069, 20488), (1576, 13897), (2138, 10244), (2561, 8552), (4276, 5122)]