643155760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19949}}^1$

素因数の和:20006

約数の個数: 80

約数和(自身を含む): 1662393600

約数和(自身を除く): 1019237840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 16120, 19949, 32240, 39898, 79796, 99745, 159592, 199490, 259337, 319184, 398980, 518674, 618419, 797960, 1037348, 1236838, 1296685, 1595920, 2074696, 2473676, 2593370, 3092095, 4149392, 4947352, 5186740, 6184190, 8039447, 9894704, 10373480, 12368380, 16078894, 20746960, 24736760, 32157788, 40197235, 49473520, 64315576, 80394470, 128631152, 160788940, 321577880, 643155760]

約数ペア:

[(1, 643155760), (2, 321577880), (4, 160788940), (5, 128631152), (8, 80394470), (10, 64315576), (13, 49473520), (16, 40197235), (20, 32157788), (26, 24736760), (31, 20746960), (40, 16078894), (52, 12368380), (62, 10373480), (65, 9894704), (80, 8039447), (104, 6184190), (124, 5186740), (130, 4947352), (155, 4149392), (208, 3092095), (248, 2593370), (260, 2473676), (310, 2074696), (403, 1595920), (496, 1296685), (520, 1236838), (620, 1037348), (806, 797960), (1040, 618419), (1240, 518674), (1612, 398980), (2015, 319184), (2480, 259337), (3224, 199490), (4030, 159592), (6448, 99745), (8060, 79796), (16120, 39898), (19949, 32240)]