21000322

素因数分解:

$2^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{509}}^1$

素因数の和:946

約数の個数: 24

約数和(自身を含む): 36802620

約数和(自身を除く): 15802298

約数列:

[1, 2, 7, 14, 49, 98, 421, 509, 842, 1018, 2947, 3563, 5894, 7126, 20629, 24941, 41258, 49882, 214289, 428578, 1500023, 3000046, 10500161, 21000322]

約数ペア:

[(1, 21000322), (2, 10500161), (7, 3000046), (14, 1500023), (49, 428578), (98, 214289), (421, 49882), (509, 41258), (842, 24941), (1018, 20629), (2947, 7126), (3563, 5894)]