21787864

素因数分解:

$2^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5807}}^1$

素因数の和:5887

約数の個数: 32

約数和(自身を含む): 47393280

約数和(自身を除く): 25605416

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 67, 134, 268, 469, 536, 938, 1876, 3752, 5807, 11614, 23228, 40649, 46456, 81298, 162596, 325192, 389069, 778138, 1556276, 2723483, 3112552, 5446966, 10893932, 21787864]

約数ペア:

[(1, 21787864), (2, 10893932), (4, 5446966), (7, 3112552), (8, 2723483), (14, 1556276), (28, 778138), (56, 389069), (67, 325192), (134, 162596), (268, 81298), (469, 46456), (536, 40649), (938, 23228), (1876, 11614), (3752, 5807)]