19519760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^2$

素因数の和:300

約数の個数: 60

約数和(自身を含む): 49233828

約数和(自身を除く): 29714068

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 137, 208, 260, 274, 520, 548, 685, 1040, 1096, 1370, 1781, 2192, 2740, 3562, 5480, 7124, 8905, 10960, 14248, 17810, 18769, 28496, 35620, 37538, 71240, 75076, 93845, 142480, 150152, 187690, 243997, 300304, 375380, 487994, 750760, 975988, 1219985, 1501520, 1951976, 2439970, 3903952, 4879940, 9759880, 19519760]

約数ペア:

[(1, 19519760), (2, 9759880), (4, 4879940), (5, 3903952), (8, 2439970), (10, 1951976), (13, 1501520), (16, 1219985), (20, 975988), (26, 750760), (40, 487994), (52, 375380), (65, 300304), (80, 243997), (104, 187690), (130, 150152), (137, 142480), (208, 93845), (260, 75076), (274, 71240), (520, 37538), (548, 35620), (685, 28496), (1040, 18769), (1096, 17810), (1370, 14248), (1781, 10960), (2192, 8905), (2740, 7124), (3562, 5480)]