20643616

素因数分解:

$2^5\times 7^1\times {\mathrm{157}}^1\times {\mathrm{587}}^1$

素因数の和:761

約数の個数: 48

約数和(自身を含む): 46823616

約数和(自身を除く): 26180000

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 157, 224, 314, 587, 628, 1099, 1174, 1256, 2198, 2348, 2512, 4109, 4396, 4696, 5024, 8218, 8792, 9392, 16436, 17584, 18784, 32872, 35168, 65744, 92159, 131488, 184318, 368636, 645113, 737272, 1290226, 1474544, 2580452, 2949088, 5160904, 10321808, 20643616]

約数ペア:

[(1, 20643616), (2, 10321808), (4, 5160904), (7, 2949088), (8, 2580452), (14, 1474544), (16, 1290226), (28, 737272), (32, 645113), (56, 368636), (112, 184318), (157, 131488), (224, 92159), (314, 65744), (587, 35168), (628, 32872), (1099, 18784), (1174, 17584), (1256, 16436), (2198, 9392), (2348, 8792), (2512, 8218), (4109, 5024), (4396, 4696)]