667678

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 24

約数和(自身を含む): 1149120

約数和(自身を除く): 481442

約数列:

[1, 2, 11, 22, 31, 62, 89, 121, 178, 242, 341, 682, 979, 1958, 2759, 3751, 5518, 7502, 10769, 21538, 30349, 60698, 333839, 667678]

約数ペア:

[(1, 667678), (2, 333839), (11, 60698), (22, 30349), (31, 21538), (62, 10769), (89, 7502), (121, 5518), (178, 3751), (242, 2759), (341, 1958), (682, 979)]