20512508575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{6151}}^1$

素因数の和:6536

約数の個数: 48

約数和(自身を含む): 28365740032

約数和(自身を除く): 7853231457

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 331, 403, 775, 1655, 2015, 4303, 6151, 8275, 10075, 10261, 21515, 30755, 51305, 79963, 107575, 133393, 153775, 190681, 256525, 399815, 666965, 953405, 1999075, 2035981, 2478853, 3334825, 4767025, 10179905, 12394265, 26467753, 50899525, 61971325, 63115411, 132338765, 315577055, 661693825, 820500343, 1577885275, 4102501715, 20512508575]

約数ペア:

[(1, 20512508575), (5, 4102501715), (13, 1577885275), (25, 820500343), (31, 661693825), (65, 315577055), (155, 132338765), (325, 63115411), (331, 61971325), (403, 50899525), (775, 26467753), (1655, 12394265), (2015, 10179905), (4303, 4767025), (6151, 3334825), (8275, 2478853), (10075, 2035981), (10261, 1999075), (21515, 953405), (30755, 666965), (51305, 399815), (79963, 256525), (107575, 190681), (133393, 153775)]