20389964

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38327}}^1$

素因数の和:38357

約数の個数: 24

約数和(自身を含む): 42927360

約数和(自身を除く): 22537396

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 38327, 76654, 153308, 268289, 536578, 728213, 1073156, 1456426, 2912852, 5097491, 10194982, 20389964]

約数ペア:

[(1, 20389964), (2, 10194982), (4, 5097491), (7, 2912852), (14, 1456426), (19, 1073156), (28, 728213), (38, 536578), (76, 268289), (133, 153308), (266, 76654), (532, 38327)]