21984520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28927}}^1$

素因数の和:28957

約数の個数: 32

約数和(自身を含む): 52070400

約数和(自身を除く): 30085880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28927, 57854, 115708, 144635, 231416, 289270, 549613, 578540, 1099226, 1157080, 2198452, 2748065, 4396904, 5496130, 10992260, 21984520]

約数ペア:

[(1, 21984520), (2, 10992260), (4, 5496130), (5, 4396904), (8, 2748065), (10, 2198452), (19, 1157080), (20, 1099226), (38, 578540), (40, 549613), (76, 289270), (95, 231416), (152, 144635), (190, 115708), (380, 57854), (760, 28927)]