21397936

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6163}}^1$

素因数の和:6209

約数の個数: 40

約数和(自身を含む): 48917504

約数和(自身を除く): 27519568

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 6163, 12326, 24652, 43141, 49304, 86282, 98608, 172564, 191053, 345128, 382106, 690256, 764212, 1337371, 1528424, 2674742, 3056848, 5349484, 10698968, 21397936]

約数ペア:

[(1, 21397936), (2, 10698968), (4, 5349484), (7, 3056848), (8, 2674742), (14, 1528424), (16, 1337371), (28, 764212), (31, 690256), (56, 382106), (62, 345128), (112, 191053), (124, 172564), (217, 98608), (248, 86282), (434, 49304), (496, 43141), (868, 24652), (1736, 12326), (3472, 6163)]