19465985

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 30730752

約数和(自身を除く): 11264767

約数列:

[1, 5, 7, 11, 31, 35, 49, 55, 77, 155, 217, 233, 245, 341, 385, 539, 1085, 1165, 1519, 1631, 1705, 2387, 2563, 2695, 7223, 7595, 8155, 11417, 11935, 12815, 16709, 17941, 36115, 50561, 57085, 79453, 83545, 89705, 125587, 252805, 353927, 397265, 556171, 627935, 1769635, 2780855, 3893197, 19465985]

約数ペア:

[(1, 19465985), (5, 3893197), (7, 2780855), (11, 1769635), (31, 627935), (35, 556171), (49, 397265), (55, 353927), (77, 252805), (155, 125587), (217, 89705), (233, 83545), (245, 79453), (341, 57085), (385, 50561), (539, 36115), (1085, 17941), (1165, 16709), (1519, 12815), (1631, 11935), (1705, 11417), (2387, 8155), (2563, 7595), (2695, 7223)]