21279384

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{42221}}^1$

素因数の和:42240

約数の個数: 48

約数和(自身を含む): 65866320

約数和(自身を除く): 44586936

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, 504, 42221, 84442, 126663, 168884, 253326, 295547, 337768, 379989, 506652, 591094, 759978, 886641, 1013304, 1182188, 1519956, 1773282, 2364376, 2659923, 3039912, 3546564, 5319846, 7093128, 10639692, 21279384]

約数ペア:

[(1, 21279384), (2, 10639692), (3, 7093128), (4, 5319846), (6, 3546564), (7, 3039912), (8, 2659923), (9, 2364376), (12, 1773282), (14, 1519956), (18, 1182188), (21, 1013304), (24, 886641), (28, 759978), (36, 591094), (42, 506652), (56, 379989), (63, 337768), (72, 295547), (84, 253326), (126, 168884), (168, 126663), (252, 84442), (504, 42221)]