21476720

素因数分解:

$2^4\times 5^1\times {\mathrm{268459}}^1$

素因数の和:268472

約数の個数: 20

約数和(自身を含む): 49933560

約数和(自身を除く): 28456840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 268459, 536918, 1073836, 1342295, 2147672, 2684590, 4295344, 5369180, 10738360, 21476720]

約数ペア:

[(1, 21476720), (2, 10738360), (4, 5369180), (5, 4295344), (8, 2684590), (10, 2147672), (16, 1342295), (20, 1073836), (40, 536918), (80, 268459)]