20971552

素因数分解:

$2^5\times 7^1\times {\mathrm{251}}^1\times {\mathrm{373}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 47500992

約数和(自身を除く): 26529440

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 251, 373, 502, 746, 1004, 1492, 1757, 2008, 2611, 2984, 3514, 4016, 5222, 5968, 7028, 8032, 10444, 11936, 14056, 20888, 28112, 41776, 56224, 83552, 93623, 187246, 374492, 655361, 748984, 1310722, 1497968, 2621444, 2995936, 5242888, 10485776, 20971552]

約数ペア:

[(1, 20971552), (2, 10485776), (4, 5242888), (7, 2995936), (8, 2621444), (14, 1497968), (16, 1310722), (28, 748984), (32, 655361), (56, 374492), (112, 187246), (224, 93623), (251, 83552), (373, 56224), (502, 41776), (746, 28112), (1004, 20888), (1492, 14056), (1757, 11936), (2008, 10444), (2611, 8032), (2984, 7028), (3514, 5968), (4016, 5222)]