19999012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5107}}^1$

素因数の和:5211

約数の個数: 24

約数和(自身を含む): 38616480

約数和(自身を除く): 18617468

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5107, 10214, 20428, 56177, 112354, 224708, 454523, 909046, 1818092, 4999753, 9999506, 19999012]

約数ペア:

[(1, 19999012), (2, 9999506), (4, 4999753), (11, 1818092), (22, 909046), (44, 454523), (89, 224708), (178, 112354), (356, 56177), (979, 20428), (1958, 10214), (3916, 5107)]