81640304

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{76157}}^1$

素因数の和:76232

約数の個数: 20

約数和(自身を含む): 160541064

約数和(自身を除く): 78900760

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 76157, 152314, 304628, 609256, 1218512, 5102519, 10205038, 20410076, 40820152, 81640304]

約数ペア:

[(1, 81640304), (2, 40820152), (4, 20410076), (8, 10205038), (16, 5102519), (67, 1218512), (134, 609256), (268, 304628), (536, 152314), (1072, 76157)]