20025315

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 36241920

約数和(自身を除く): 16216605

約数列:

[1, 3, 5, 9, 15, 43, 45, 79, 129, 131, 215, 237, 387, 393, 395, 645, 655, 711, 1179, 1185, 1935, 1965, 3397, 3555, 5633, 5895, 10191, 10349, 16899, 16985, 28165, 30573, 31047, 50697, 50955, 51745, 84495, 93141, 152865, 155235, 253485, 445007, 465705, 1335021, 2225035, 4005063, 6675105, 20025315]

約数ペア:

[(1, 20025315), (3, 6675105), (5, 4005063), (9, 2225035), (15, 1335021), (43, 465705), (45, 445007), (79, 253485), (129, 155235), (131, 152865), (215, 93141), (237, 84495), (387, 51745), (393, 50955), (395, 50697), (645, 31047), (655, 30573), (711, 28165), (1179, 16985), (1185, 16899), (1935, 10349), (1965, 10191), (3397, 5895), (3555, 5633)]