215865004

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{149491}}^1$

素因数の和:149533

約数の個数: 18

約数和(自身を含む): 398695164

約数和(自身を除く): 182830160

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 149491, 298982, 597964, 2840329, 5680658, 11361316, 53966251, 107932502, 215865004]

約数ペア:

[(1, 215865004), (2, 107932502), (4, 53966251), (19, 11361316), (38, 5680658), (76, 2840329), (361, 597964), (722, 298982), (1444, 149491)]