21264351

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 9701409

約数列:

[1, 3, 23, 47, 69, 79, 83, 141, 237, 249, 1081, 1817, 1909, 3243, 3713, 3901, 5451, 5727, 6557, 11139, 11703, 19671, 85399, 89723, 150811, 256197, 269169, 308179, 452433, 924537, 7088117, 21264351]

約数ペア:

[(1, 21264351), (3, 7088117), (23, 924537), (47, 452433), (69, 308179), (79, 269169), (83, 256197), (141, 150811), (237, 89723), (249, 85399), (1081, 19671), (1817, 11703), (1909, 11139), (3243, 6557), (3713, 5727), (3901, 5451)]