21854165

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{907}}^1$

素因数の和:1052

約数の個数: 16

約数和(自身を含む): 27022080

約数和(自身を除く): 5167915

約数列:

[1, 5, 61, 79, 305, 395, 907, 4535, 4819, 24095, 55327, 71653, 276635, 358265, 4370833, 21854165]

約数ペア:

[(1, 21854165), (5, 4370833), (61, 358265), (79, 276635), (305, 71653), (395, 55327), (907, 24095), (4535, 4819)]