19489540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1907}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 47440512

約数和(自身を除く): 27950972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 1907, 2044, 2555, 3814, 5110, 7628, 9535, 10220, 13349, 19070, 26698, 38140, 53396, 66745, 133490, 139211, 266980, 278422, 556844, 696055, 974477, 1392110, 1948954, 2784220, 3897908, 4872385, 9744770, 19489540]

約数ペア:

[(1, 19489540), (2, 9744770), (4, 4872385), (5, 3897908), (7, 2784220), (10, 1948954), (14, 1392110), (20, 974477), (28, 696055), (35, 556844), (70, 278422), (73, 266980), (140, 139211), (146, 133490), (292, 66745), (365, 53396), (511, 38140), (730, 26698), (1022, 19070), (1460, 13349), (1907, 10220), (2044, 9535), (2555, 7628), (3814, 5110)]