20218904

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{61643}}^1$

素因数の和:61690

約数の個数: 16

約数和(自身を含む): 38835720

約数和(自身を除く): 18616816

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 61643, 123286, 246572, 493144, 2527363, 5054726, 10109452, 20218904]

約数ペア:

[(1, 20218904), (2, 10109452), (4, 5054726), (8, 2527363), (41, 493144), (82, 246572), (164, 123286), (328, 61643)]