21490728

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{127921}}^1$

素因数の和:127937

約数の個数: 32

約数和(自身を含む): 61402560

約数和(自身を除く): 39911832

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 127921, 255842, 383763, 511684, 767526, 895447, 1023368, 1535052, 1790894, 2686341, 3070104, 3581788, 5372682, 7163576, 10745364, 21490728]

約数ペア:

[(1, 21490728), (2, 10745364), (3, 7163576), (4, 5372682), (6, 3581788), (7, 3070104), (8, 2686341), (12, 1790894), (14, 1535052), (21, 1023368), (24, 895447), (28, 767526), (42, 511684), (56, 383763), (84, 255842), (168, 127921)]