19880623

素因数分解:

$7^3\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:559

約数の個数: 16

約数和(自身を含む): 23400000

約数和(自身を除く): 3519377

約数列:

[1, 7, 49, 149, 343, 389, 1043, 2723, 7301, 19061, 51107, 57961, 133427, 405727, 2840089, 19880623]

約数ペア:

[(1, 19880623), (7, 2840089), (49, 405727), (149, 133427), (343, 57961), (389, 51107), (1043, 19061), (2723, 7301)]