1287520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{619}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 3281040

約数和(自身を除く): 1993520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 619, 1040, 1238, 2080, 2476, 3095, 4952, 6190, 8047, 9904, 12380, 16094, 19808, 24760, 32188, 40235, 49520, 64376, 80470, 99040, 128752, 160940, 257504, 321880, 643760, 1287520]

約数ペア:

[(1, 1287520), (2, 643760), (4, 321880), (5, 257504), (8, 160940), (10, 128752), (13, 99040), (16, 80470), (20, 64376), (26, 49520), (32, 40235), (40, 32188), (52, 24760), (65, 19808), (80, 16094), (104, 12380), (130, 9904), (160, 8047), (208, 6190), (260, 4952), (416, 3095), (520, 2476), (619, 2080), (1040, 1238)]