19789385

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1049}}^1$

素因数の和:1086

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 10450615

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1049, 1715, 2695, 3773, 5245, 7343, 11539, 18865, 36715, 51401, 57695, 80773, 257005, 359807, 403865, 565411, 1799035, 2827055, 3957877, 19789385]

約数ペア:

[(1, 19789385), (5, 3957877), (7, 2827055), (11, 1799035), (35, 565411), (49, 403865), (55, 359807), (77, 257005), (245, 80773), (343, 57695), (385, 51401), (539, 36715), (1049, 18865), (1715, 11539), (2695, 7343), (3773, 5245)]