219921775

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:604

約数の個数: 36

約数和(自身を含む): 295027000

約数和(自身を除く): 75105225

約数列:

[1, 5, 17, 25, 61, 85, 289, 305, 425, 499, 1037, 1445, 1525, 2495, 5185, 7225, 8483, 12475, 17629, 25925, 30439, 42415, 88145, 144211, 152195, 212075, 440725, 517463, 721055, 760975, 2587315, 3605275, 8796871, 12936575, 43984355, 219921775]

約数ペア:

[(1, 219921775), (5, 43984355), (17, 12936575), (25, 8796871), (61, 3605275), (85, 2587315), (289, 760975), (305, 721055), (425, 517463), (499, 440725), (1037, 212075), (1445, 152195), (1525, 144211), (2495, 88145), (5185, 42415), (7225, 30439), (8483, 25925), (12475, 17629)]