21040072

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1973}}^1$

素因数の和:2053

約数の個数: 32

約数和(自身を含む): 41690880

約数和(自身を除く): 20650808

約数列:

[1, 2, 4, 8, 31, 43, 62, 86, 124, 172, 248, 344, 1333, 1973, 2666, 3946, 5332, 7892, 10664, 15784, 61163, 84839, 122326, 169678, 244652, 339356, 489304, 678712, 2630009, 5260018, 10520036, 21040072]

約数ペア:

[(1, 21040072), (2, 10520036), (4, 5260018), (8, 2630009), (31, 678712), (43, 489304), (62, 339356), (86, 244652), (124, 169678), (172, 122326), (248, 84839), (344, 61163), (1333, 15784), (1973, 10664), (2666, 7892), (3946, 5332)]