20665388

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7349}}^1$

素因数の和:7409

約数の個数: 24

約数和(自身を含む): 39102000

約数和(自身を除く): 18436612

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7349, 14698, 29396, 139631, 271913, 279262, 543826, 558524, 1087652, 5166347, 10332694, 20665388]

約数ペア:

[(1, 20665388), (2, 10332694), (4, 5166347), (19, 1087652), (37, 558524), (38, 543826), (74, 279262), (76, 271913), (148, 139631), (703, 29396), (1406, 14698), (2812, 7349)]