20640284

素因数分解:

$2^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{4261}}^1$

素因数の和:4445

約数の個数: 24

約数和(自身を含む): 41528928

約数和(自身を除く): 20888644

約数列:

[1, 2, 4, 7, 14, 28, 173, 346, 692, 1211, 2422, 4261, 4844, 8522, 17044, 29827, 59654, 119308, 737153, 1474306, 2948612, 5160071, 10320142, 20640284]

約数ペア:

[(1, 20640284), (2, 10320142), (4, 5160071), (7, 2948612), (14, 1474306), (28, 737153), (173, 119308), (346, 59654), (692, 29827), (1211, 17044), (2422, 8522), (4261, 4844)]