21887515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{4057}}^1$

素因数の和:4158

約数の個数: 16

約数和(自身を含む): 28633248

約数和(自身を除く): 6745733

約数列:

[1, 5, 13, 65, 83, 415, 1079, 4057, 5395, 20285, 52741, 263705, 336731, 1683655, 4377503, 21887515]

約数ペア:

[(1, 21887515), (5, 4377503), (13, 1683655), (65, 336731), (83, 263705), (415, 52741), (1079, 20285), (4057, 5395)]