20715940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2027}}^1$

素因数の和:2116

約数の個数: 48

約数和(自身を含む): 50424192

約数和(自身を除く): 29708252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2027, 2044, 2555, 4054, 5110, 8108, 10135, 10220, 14189, 20270, 28378, 40540, 56756, 70945, 141890, 147971, 283780, 295942, 591884, 739855, 1035797, 1479710, 2071594, 2959420, 4143188, 5178985, 10357970, 20715940]

約数ペア:

[(1, 20715940), (2, 10357970), (4, 5178985), (5, 4143188), (7, 2959420), (10, 2071594), (14, 1479710), (20, 1035797), (28, 739855), (35, 591884), (70, 295942), (73, 283780), (140, 147971), (146, 141890), (292, 70945), (365, 56756), (511, 40540), (730, 28378), (1022, 20270), (1460, 14189), (2027, 10220), (2044, 10135), (2555, 8108), (4054, 5110)]