22681720

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{4139}}^1$

素因数の和:4287

約数の個数: 32

約数和(自身を含む): 51418800

約数和(自身を除く): 28737080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 4139, 5480, 8278, 16556, 20695, 33112, 41390, 82780, 165560, 567043, 1134086, 2268172, 2835215, 4536344, 5670430, 11340860, 22681720]

約数ペア:

[(1, 22681720), (2, 11340860), (4, 5670430), (5, 4536344), (8, 2835215), (10, 2268172), (20, 1134086), (40, 567043), (137, 165560), (274, 82780), (548, 41390), (685, 33112), (1096, 20695), (1370, 16556), (2740, 8278), (4139, 5480)]