278869940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1\times {\mathrm{937}}^1$

素因数の和:1616

約数の個数: 48

約数和(自身を含む): 612686592

約数和(自身を除く): 333816652

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 647, 937, 1294, 1874, 2588, 3235, 3748, 4685, 6470, 9370, 12940, 14881, 18740, 21551, 29762, 43102, 59524, 74405, 86204, 107755, 148810, 215510, 297620, 431020, 606239, 1212478, 2424956, 3031195, 6062390, 12124780, 13943497, 27886994, 55773988, 69717485, 139434970, 278869940]

約数ペア:

[(1, 278869940), (2, 139434970), (4, 69717485), (5, 55773988), (10, 27886994), (20, 13943497), (23, 12124780), (46, 6062390), (92, 3031195), (115, 2424956), (230, 1212478), (460, 606239), (647, 431020), (937, 297620), (1294, 215510), (1874, 148810), (2588, 107755), (3235, 86204), (3748, 74405), (4685, 59524), (6470, 43102), (9370, 29762), (12940, 21551), (14881, 18740)]