398840208

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{639167}}^1$

素因数の和:639191

約数の個数: 40

約数和(自身を含む): 1109595648

約数和(自身を除く): 710755440

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 639167, 1278334, 1917501, 2556668, 3835002, 5113336, 7670004, 8309171, 10226672, 15340008, 16618342, 24927513, 30680016, 33236684, 49855026, 66473368, 99710052, 132946736, 199420104, 398840208]

約数ペア:

[(1, 398840208), (2, 199420104), (3, 132946736), (4, 99710052), (6, 66473368), (8, 49855026), (12, 33236684), (13, 30680016), (16, 24927513), (24, 16618342), (26, 15340008), (39, 10226672), (48, 8309171), (52, 7670004), (78, 5113336), (104, 3835002), (156, 2556668), (208, 1917501), (312, 1278334), (624, 639167)]