1321128575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{12281}}^1$

素因数の和:12635

約数の個数: 24

約数和(自身を含む): 1769688816

約数和(自身を除く): 448560241

約数列:

[1, 5, 13, 25, 65, 325, 331, 1655, 4303, 8275, 12281, 21515, 61405, 107575, 159653, 307025, 798265, 3991325, 4065011, 20325055, 52845143, 101625275, 264225715, 1321128575]

約数ペア:

[(1, 1321128575), (5, 264225715), (13, 101625275), (25, 52845143), (65, 20325055), (325, 4065011), (331, 3991325), (1655, 798265), (4303, 307025), (8275, 159653), (12281, 107575), (21515, 61405)]