21297746

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{4091}}^1$

素因数の和:4249

約数の個数: 16

約数和(自身を含む): 33881760

約数和(自身を除く): 12584014

約数列:

[1, 2, 19, 38, 137, 274, 2603, 4091, 5206, 8182, 77729, 155458, 560467, 1120934, 10648873, 21297746]

約数ペア:

[(1, 21297746), (2, 10648873), (19, 1120934), (38, 560467), (137, 155458), (274, 77729), (2603, 8182), (4091, 5206)]