131820520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{253501}}^1$

素因数の和:253525

約数の個数: 32

約数和(自身を含む): 319412520

約数和(自身を除く): 187592000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 253501, 507002, 1014004, 1267505, 2028008, 2535010, 3295513, 5070020, 6591026, 10140040, 13182052, 16477565, 26364104, 32955130, 65910260, 131820520]

約数ペア:

[(1, 131820520), (2, 65910260), (4, 32955130), (5, 26364104), (8, 16477565), (10, 13182052), (13, 10140040), (20, 6591026), (26, 5070020), (40, 3295513), (52, 2535010), (65, 2028008), (104, 1267505), (130, 1014004), (260, 507002), (520, 253501)]