19914328

素因数分解:

$2^3\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1787}}^1$

素因数の和:1999

約数の個数: 32

約数和(自身を含む): 42912000

約数和(自身を除く): 22997672

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 199, 398, 796, 1393, 1592, 1787, 2786, 3574, 5572, 7148, 11144, 12509, 14296, 25018, 50036, 100072, 355613, 711226, 1422452, 2489291, 2844904, 4978582, 9957164, 19914328]

約数ペア:

[(1, 19914328), (2, 9957164), (4, 4978582), (7, 2844904), (8, 2489291), (14, 1422452), (28, 711226), (56, 355613), (199, 100072), (398, 50036), (796, 25018), (1393, 14296), (1592, 12509), (1787, 11144), (2786, 7148), (3574, 5572)]