19899440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22613}}^1$

素因数の和:22637

約数の個数: 40

約数和(自身を含む): 50474448

約数和(自身を除く): 30575008

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22613, 45226, 90452, 113065, 180904, 226130, 248743, 361808, 452260, 497486, 904520, 994972, 1243715, 1809040, 1989944, 2487430, 3979888, 4974860, 9949720, 19899440]

約数ペア:

[(1, 19899440), (2, 9949720), (4, 4974860), (5, 3979888), (8, 2487430), (10, 1989944), (11, 1809040), (16, 1243715), (20, 994972), (22, 904520), (40, 497486), (44, 452260), (55, 361808), (80, 248743), (88, 226130), (110, 180904), (176, 113065), (220, 90452), (440, 45226), (880, 22613)]