21309760

素因数分解:

$2^6\times 5^1\times {\mathrm{66593}}^1$

素因数の和:66610

約数の個数: 28

約数和(自身を含む): 50744628

約数和(自身を除く): 29434868

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66593, 133186, 266372, 332965, 532744, 665930, 1065488, 1331860, 2130976, 2663720, 4261952, 5327440, 10654880, 21309760]

約数ペア:

[(1, 21309760), (2, 10654880), (4, 5327440), (5, 4261952), (8, 2663720), (10, 2130976), (16, 1331860), (20, 1065488), (32, 665930), (40, 532744), (64, 332965), (80, 266372), (160, 133186), (320, 66593)]