204516520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{393301}}^1$

素因数の和:393325

約数の個数: 32

約数和(自身を含む): 495560520

約数和(自身を除く): 291044000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 393301, 786602, 1573204, 1966505, 3146408, 3933010, 5112913, 7866020, 10225826, 15732040, 20451652, 25564565, 40903304, 51129130, 102258260, 204516520]

約数ペア:

[(1, 204516520), (2, 102258260), (4, 51129130), (5, 40903304), (8, 25564565), (10, 20451652), (13, 15732040), (20, 10225826), (26, 7866020), (40, 5112913), (52, 3933010), (65, 3146408), (104, 1966505), (130, 1573204), (260, 786602), (520, 393301)]