20880328

素因数分解:

$2^3\times 7^1\times {\mathrm{571}}^1\times {\mathrm{653}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 44890560

約数和(自身を除く): 24010232

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 571, 653, 1142, 1306, 2284, 2612, 3997, 4568, 4571, 5224, 7994, 9142, 15988, 18284, 31976, 36568, 372863, 745726, 1491452, 2610041, 2982904, 5220082, 10440164, 20880328]

約数ペア:

[(1, 20880328), (2, 10440164), (4, 5220082), (7, 2982904), (8, 2610041), (14, 1491452), (28, 745726), (56, 372863), (571, 36568), (653, 31976), (1142, 18284), (1306, 15988), (2284, 9142), (2612, 7994), (3997, 5224), (4568, 4571)]