640319323

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{19181}}^1$

素因数の和:19458

約数の個数: 16

約数和(自身を含む): 773418240

約数和(自身を除く): 133098917

約数列:

[1, 7, 19, 133, 251, 1757, 4769, 19181, 33383, 134267, 364439, 2551073, 4814431, 33701017, 91474189, 640319323]

約数ペア:

[(1, 640319323), (7, 91474189), (19, 33701017), (133, 4814431), (251, 2551073), (1757, 364439), (4769, 134267), (19181, 33383)]