1278455880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{819523}}^1$

素因数の和:819550

約数の個数: 64

約数和(自身を含む): 4130400960

約数和(自身を除く): 2851945080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 819523, 1639046, 2458569, 3278092, 4097615, 4917138, 6556184, 8195230, 9834276, 10653799, 12292845, 16390460, 19668552, 21307598, 24585690, 31961397, 32780920, 42615196, 49171380, 53268995, 63922794, 85230392, 98342760, 106537990, 127845588, 159806985, 213075980, 255691176, 319613970, 426151960, 639227940, 1278455880]

約数ペア:

[(1, 1278455880), (2, 639227940), (3, 426151960), (4, 319613970), (5, 255691176), (6, 213075980), (8, 159806985), (10, 127845588), (12, 106537990), (13, 98342760), (15, 85230392), (20, 63922794), (24, 53268995), (26, 49171380), (30, 42615196), (39, 32780920), (40, 31961397), (52, 24585690), (60, 21307598), (65, 19668552), (78, 16390460), (104, 12292845), (120, 10653799), (130, 9834276), (156, 8195230), (195, 6556184), (260, 4917138), (312, 4097615), (390, 3278092), (520, 2458569), (780, 1639046), (1560, 819523)]