19777784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10009}}^1$

素因数の和:10047

約数の個数: 32

約数和(自身を含む): 42042000

約数和(自身を除く): 22264216

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10009, 20018, 40036, 80072, 130117, 190171, 260234, 380342, 520468, 760684, 1040936, 1521368, 2472223, 4944446, 9888892, 19777784]

約数ペア:

[(1, 19777784), (2, 9888892), (4, 4944446), (8, 2472223), (13, 1521368), (19, 1040936), (26, 760684), (38, 520468), (52, 380342), (76, 260234), (104, 190171), (152, 130117), (247, 80072), (494, 40036), (988, 20018), (1976, 10009)]