21668515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{4987}}^1$

素因数の和:5082

約数の個数: 16

約数和(自身を含む): 28730880

約数和(自身を除く): 7062365

約数列:

[1, 5, 11, 55, 79, 395, 869, 4345, 4987, 24935, 54857, 274285, 393973, 1969865, 4333703, 21668515]

約数ペア:

[(1, 21668515), (5, 4333703), (11, 1969865), (55, 393973), (79, 274285), (395, 54857), (869, 24935), (4345, 4987)]