21197192

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:701

約数の個数: 32

約数和(自身を含む): 40979520

約数和(自身を除く): 19782328

約数列:

[1, 2, 4, 8, 67, 71, 134, 142, 268, 284, 536, 557, 568, 1114, 2228, 4456, 4757, 9514, 19028, 37319, 38056, 39547, 74638, 79094, 149276, 158188, 298552, 316376, 2649649, 5299298, 10598596, 21197192]

約数ペア:

[(1, 21197192), (2, 10598596), (4, 5299298), (8, 2649649), (67, 316376), (71, 298552), (134, 158188), (142, 149276), (268, 79094), (284, 74638), (536, 39547), (557, 38056), (568, 37319), (1114, 19028), (2228, 9514), (4456, 4757)]