19560321

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 32497920

約数和(自身を除く): 12937599

約数列:

[1, 3, 9, 11, 33, 41, 61, 79, 99, 123, 183, 237, 369, 451, 549, 671, 711, 869, 1353, 2013, 2501, 2607, 3239, 4059, 4819, 6039, 7503, 7821, 9717, 14457, 22509, 27511, 29151, 35629, 43371, 53009, 82533, 106887, 159027, 197579, 247599, 320661, 477081, 592737, 1778211, 2173369, 6520107, 19560321]

約数ペア:

[(1, 19560321), (3, 6520107), (9, 2173369), (11, 1778211), (33, 592737), (41, 477081), (61, 320661), (79, 247599), (99, 197579), (123, 159027), (183, 106887), (237, 82533), (369, 53009), (451, 43371), (549, 35629), (671, 29151), (711, 27511), (869, 22509), (1353, 14457), (2013, 9717), (2501, 7821), (2607, 7503), (3239, 6039), (4059, 4819)]