640926671

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{361901}}^1$

素因数の和:361942

約数の個数: 16

約数和(自身を含む): 833822208

約数和(自身を除く): 192895537

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 361901, 2533307, 3980911, 8323723, 27866377, 58266061, 91560953, 640926671]

約数ペア:

[(1, 640926671), (7, 91560953), (11, 58266061), (23, 27866377), (77, 8323723), (161, 3980911), (253, 2533307), (1771, 361901)]