217385968

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{86539}}^1$

素因数の和:86704

約数の個数: 20

約数和(自身を含む): 423872920

約数和(自身を除く): 206486952

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 86539, 173078, 346156, 692312, 1384624, 13586623, 27173246, 54346492, 108692984, 217385968]

約数ペア:

[(1, 217385968), (2, 108692984), (4, 54346492), (8, 27173246), (16, 13586623), (157, 1384624), (314, 692312), (628, 346156), (1256, 173078), (2512, 86539)]