20053520

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{571}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 46812480

約数和(自身を除く): 26758960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 571, 878, 1142, 1756, 2195, 2284, 2855, 3512, 4390, 4568, 5710, 7024, 8780, 9136, 11420, 17560, 22840, 35120, 45680, 250669, 501338, 1002676, 1253345, 2005352, 2506690, 4010704, 5013380, 10026760, 20053520]

約数ペア:

[(1, 20053520), (2, 10026760), (4, 5013380), (5, 4010704), (8, 2506690), (10, 2005352), (16, 1253345), (20, 1002676), (40, 501338), (80, 250669), (439, 45680), (571, 35120), (878, 22840), (1142, 17560), (1756, 11420), (2195, 9136), (2284, 8780), (2855, 7024), (3512, 5710), (4390, 4568)]