642948

素因数分解:

$2^2\times 3^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 1515360

約数和(自身を除く): 872412

約数列:

[1, 2, 3, 4, 6, 12, 131, 262, 393, 409, 524, 786, 818, 1227, 1572, 1636, 2454, 4908, 53579, 107158, 160737, 214316, 321474, 642948]

約数ペア:

[(1, 642948), (2, 321474), (3, 214316), (4, 160737), (6, 107158), (12, 53579), (131, 4908), (262, 2454), (393, 1636), (409, 1572), (524, 1227), (786, 818)]