217025360

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{4219}}^1$

素因数の和:4875

約数の個数: 40

約数和(自身を含む): 505488480

約数和(自身を除く): 288463120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2572, 3215, 4219, 5144, 6430, 8438, 10288, 12860, 16876, 21095, 25720, 33752, 42190, 51440, 67504, 84380, 168760, 337520, 2712817, 5425634, 10851268, 13564085, 21702536, 27128170, 43405072, 54256340, 108512680, 217025360]

約数ペア:

[(1, 217025360), (2, 108512680), (4, 54256340), (5, 43405072), (8, 27128170), (10, 21702536), (16, 13564085), (20, 10851268), (40, 5425634), (80, 2712817), (643, 337520), (1286, 168760), (2572, 84380), (3215, 67504), (4219, 51440), (5144, 42190), (6430, 33752), (8438, 25720), (10288, 21095), (12860, 16876)]