815719120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{328919}}^1$

素因数の和:328963

約数の個数: 40

約数和(自身を含む): 1957731840

約数和(自身を除く): 1142012720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 328919, 657838, 1315676, 1644595, 2631352, 3289190, 5262704, 6578380, 10196489, 13156760, 20392978, 26313520, 40785956, 50982445, 81571912, 101964890, 163143824, 203929780, 407859560, 815719120]

約数ペア:

[(1, 815719120), (2, 407859560), (4, 203929780), (5, 163143824), (8, 101964890), (10, 81571912), (16, 50982445), (20, 40785956), (31, 26313520), (40, 20392978), (62, 13156760), (80, 10196489), (124, 6578380), (155, 5262704), (248, 3289190), (310, 2631352), (496, 1644595), (620, 1315676), (1240, 657838), (2480, 328919)]