203476520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{391301}}^1$

素因数の和:391325

約数の個数: 32

約数和(自身を含む): 493040520

約数和(自身を除く): 289564000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 391301, 782602, 1565204, 1956505, 3130408, 3913010, 5086913, 7826020, 10173826, 15652040, 20347652, 25434565, 40695304, 50869130, 101738260, 203476520]

約数ペア:

[(1, 203476520), (2, 101738260), (4, 50869130), (5, 40695304), (8, 25434565), (10, 20347652), (13, 15652040), (20, 10173826), (26, 7826020), (40, 5086913), (52, 3913010), (65, 3130408), (104, 1956505), (130, 1565204), (260, 782602), (520, 391301)]