21891352

素因数分解:

$2^3\times 7^1\times {\mathrm{431}}^1\times {\mathrm{907}}^1$

素因数の和:1351

約数の個数: 32

約数和(自身を含む): 47070720

約数和(自身を除く): 25179368

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 431, 862, 907, 1724, 1814, 3017, 3448, 3628, 6034, 6349, 7256, 12068, 12698, 24136, 25396, 50792, 390917, 781834, 1563668, 2736419, 3127336, 5472838, 10945676, 21891352]

約数ペア:

[(1, 21891352), (2, 10945676), (4, 5472838), (7, 3127336), (8, 2736419), (14, 1563668), (28, 781834), (56, 390917), (431, 50792), (862, 25396), (907, 24136), (1724, 12698), (1814, 12068), (3017, 7256), (3448, 6349), (3628, 6034)]