20007520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9619}}^1$

素因数の和:9647

約数の個数: 48

約数和(自身を含む): 50909040

約数和(自身を除く): 30901520

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, 1040, 2080, 9619, 19238, 38476, 48095, 76952, 96190, 125047, 153904, 192380, 250094, 307808, 384760, 500188, 625235, 769520, 1000376, 1250470, 1539040, 2000752, 2500940, 4001504, 5001880, 10003760, 20007520]

約数ペア:

[(1, 20007520), (2, 10003760), (4, 5001880), (5, 4001504), (8, 2500940), (10, 2000752), (13, 1539040), (16, 1250470), (20, 1000376), (26, 769520), (32, 625235), (40, 500188), (52, 384760), (65, 307808), (80, 250094), (104, 192380), (130, 153904), (160, 125047), (208, 96190), (260, 76952), (416, 48095), (520, 38476), (1040, 19238), (2080, 9619)]