21623847

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{509}}^1$

素因数の和:560

約数の個数: 36

約数和(自身を含む): 35697960

約数和(自身を除く): 14074113

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 289, 357, 509, 833, 867, 1527, 2023, 2499, 3563, 6069, 8653, 10689, 14161, 24941, 25959, 42483, 60571, 74823, 147101, 181713, 423997, 441303, 1029707, 1271991, 3089121, 7207949, 21623847]

約数ペア:

[(1, 21623847), (3, 7207949), (7, 3089121), (17, 1271991), (21, 1029707), (49, 441303), (51, 423997), (119, 181713), (147, 147101), (289, 74823), (357, 60571), (509, 42483), (833, 25959), (867, 24941), (1527, 14161), (2023, 10689), (2499, 8653), (3563, 6069)]