398414947

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 487618560

約数和(自身を除く): 89203613

約数列:

[1, 7, 23, 73, 109, 161, 311, 511, 763, 1679, 2177, 2507, 7153, 7957, 11753, 17549, 22703, 33899, 50071, 55699, 158921, 183011, 237293, 522169, 779677, 1281077, 2474627, 3655183, 5457739, 17322389, 56916421, 398414947]

約数ペア:

[(1, 398414947), (7, 56916421), (23, 17322389), (73, 5457739), (109, 3655183), (161, 2474627), (311, 1281077), (511, 779677), (763, 522169), (1679, 237293), (2177, 183011), (2507, 158921), (7153, 55699), (7957, 50071), (11753, 33899), (17549, 22703)]