20619351

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 34201440

約数和(自身を除く): 13582089

約数列:

[1, 3, 9, 17, 19, 41, 51, 57, 123, 153, 171, 173, 323, 369, 519, 697, 779, 969, 1557, 2091, 2337, 2907, 2941, 3287, 6273, 7011, 7093, 8823, 9861, 13243, 21279, 26469, 29583, 39729, 55879, 63837, 119187, 120581, 134767, 167637, 361743, 404301, 502911, 1085229, 1212903, 2291039, 6873117, 20619351]

約数ペア:

[(1, 20619351), (3, 6873117), (9, 2291039), (17, 1212903), (19, 1085229), (41, 502911), (51, 404301), (57, 361743), (123, 167637), (153, 134767), (171, 120581), (173, 119187), (323, 63837), (369, 55879), (519, 39729), (697, 29583), (779, 26469), (969, 21279), (1557, 13243), (2091, 9861), (2337, 8823), (2907, 7093), (2941, 7011), (3287, 6273)]