640195918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{1499}}^1\times {\mathrm{11239}}^1$

素因数の和:12759

約数の個数: 16

約数和(自身を含む): 1011600000

約数和(自身を除く): 371404082

約数列:

[1, 2, 19, 38, 1499, 2998, 11239, 22478, 28481, 56962, 213541, 427082, 16847261, 33694522, 320097959, 640195918]

約数ペア:

[(1, 640195918), (2, 320097959), (19, 33694522), (38, 16847261), (1499, 427082), (2998, 213541), (11239, 56962), (22478, 28481)]