2687638

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{647}}^1$

素因数の和:747

約数の個数: 16

約数和(自身を含む): 4230144

約数和(自身を除く): 1542506

約数列:

[1, 2, 31, 62, 67, 134, 647, 1294, 2077, 4154, 20057, 40114, 43349, 86698, 1343819, 2687638]

約数ペア:

[(1, 2687638), (2, 1343819), (31, 86698), (62, 43349), (67, 40114), (134, 20057), (647, 4154), (1294, 2077)]