19945520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{35617}}^1$

素因数の和:35637

約数の個数: 40

約数和(自身を含む): 52999584

約数和(自身を除く): 33054064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 35617, 71234, 142468, 178085, 249319, 284936, 356170, 498638, 569872, 712340, 997276, 1246595, 1424680, 1994552, 2493190, 2849360, 3989104, 4986380, 9972760, 19945520]

約数ペア:

[(1, 19945520), (2, 9972760), (4, 4986380), (5, 3989104), (7, 2849360), (8, 2493190), (10, 1994552), (14, 1424680), (16, 1246595), (20, 997276), (28, 712340), (35, 569872), (40, 498638), (56, 356170), (70, 284936), (80, 249319), (112, 178085), (140, 142468), (280, 71234), (560, 35617)]