311638

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 16

約数和(自身を含む): 504000

約数和(自身を除く): 192362

約数列:

[1, 2, 19, 38, 59, 118, 139, 278, 1121, 2242, 2641, 5282, 8201, 16402, 155819, 311638]

約数ペア:

[(1, 311638), (2, 155819), (19, 16402), (38, 8201), (59, 5282), (118, 2641), (139, 2242), (278, 1121)]