20481435

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 38648064

約数和(自身を除く): 18166629

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 157, 195, 223, 471, 585, 669, 785, 1115, 1413, 2007, 2041, 2355, 2899, 3345, 6123, 7065, 8697, 10035, 10205, 14495, 18369, 26091, 30615, 35011, 43485, 91845, 105033, 130455, 175055, 315099, 455143, 525165, 1365429, 1575495, 2275715, 4096287, 6827145, 20481435]

約数ペア:

[(1, 20481435), (3, 6827145), (5, 4096287), (9, 2275715), (13, 1575495), (15, 1365429), (39, 525165), (45, 455143), (65, 315099), (117, 175055), (157, 130455), (195, 105033), (223, 91845), (471, 43485), (585, 35011), (669, 30615), (785, 26091), (1115, 18369), (1413, 14495), (2007, 10205), (2041, 10035), (2355, 8697), (2899, 7065), (3345, 6123)]