21083860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2063}}^1$

素因数の和:2152

約数の個数: 48

約数和(自身を含む): 51319296

約数和(自身を除く): 30235436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2044, 2063, 2555, 4126, 5110, 8252, 10220, 10315, 14441, 20630, 28882, 41260, 57764, 72205, 144410, 150599, 288820, 301198, 602396, 752995, 1054193, 1505990, 2108386, 3011980, 4216772, 5270965, 10541930, 21083860]

約数ペア:

[(1, 21083860), (2, 10541930), (4, 5270965), (5, 4216772), (7, 3011980), (10, 2108386), (14, 1505990), (20, 1054193), (28, 752995), (35, 602396), (70, 301198), (73, 288820), (140, 150599), (146, 144410), (292, 72205), (365, 57764), (511, 41260), (730, 28882), (1022, 20630), (1460, 14441), (2044, 10315), (2063, 10220), (2555, 8252), (4126, 5110)]