42877880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 100124640

約数和(自身を除く): 57246760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 172, 194, 215, 257, 344, 388, 430, 485, 514, 776, 860, 970, 1028, 1285, 1720, 1940, 2056, 2570, 3880, 4171, 5140, 8342, 10280, 11051, 16684, 20855, 22102, 24929, 33368, 41710, 44204, 49858, 55255, 83420, 88408, 99716, 110510, 124645, 166840, 199432, 221020, 249290, 442040, 498580, 997160, 1071947, 2143894, 4287788, 5359735, 8575576, 10719470, 21438940, 42877880]

約数ペア:

[(1, 42877880), (2, 21438940), (4, 10719470), (5, 8575576), (8, 5359735), (10, 4287788), (20, 2143894), (40, 1071947), (43, 997160), (86, 498580), (97, 442040), (172, 249290), (194, 221020), (215, 199432), (257, 166840), (344, 124645), (388, 110510), (430, 99716), (485, 88408), (514, 83420), (776, 55255), (860, 49858), (970, 44204), (1028, 41710), (1285, 33368), (1720, 24929), (1940, 22102), (2056, 20855), (2570, 16684), (3880, 11051), (4171, 10280), (5140, 8342)]