21608320

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1777}}^1$

素因数の和:1815

約数の個数: 64

約数和(自身を含む): 54406800

約数和(自身を除く): 32798480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 1777, 2432, 3040, 3554, 6080, 7108, 8885, 12160, 14216, 17770, 28432, 33763, 35540, 56864, 67526, 71080, 113728, 135052, 142160, 168815, 227456, 270104, 284320, 337630, 540208, 568640, 675260, 1080416, 1137280, 1350520, 2160832, 2701040, 4321664, 5402080, 10804160, 21608320]

約数ペア:

[(1, 21608320), (2, 10804160), (4, 5402080), (5, 4321664), (8, 2701040), (10, 2160832), (16, 1350520), (19, 1137280), (20, 1080416), (32, 675260), (38, 568640), (40, 540208), (64, 337630), (76, 284320), (80, 270104), (95, 227456), (128, 168815), (152, 142160), (160, 135052), (190, 113728), (304, 71080), (320, 67526), (380, 56864), (608, 35540), (640, 33763), (760, 28432), (1216, 17770), (1520, 14216), (1777, 12160), (2432, 8885), (3040, 7108), (3554, 6080)]