20585895

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18605145

約数列:

[1, 3, 5, 11, 15, 17, 33, 41, 51, 55, 85, 123, 165, 179, 187, 205, 255, 451, 537, 561, 615, 697, 895, 935, 1353, 1969, 2091, 2255, 2685, 2805, 3043, 3485, 5907, 6765, 7339, 7667, 9129, 9845, 10455, 15215, 22017, 23001, 29535, 33473, 36695, 38335, 45645, 80729, 100419, 110085, 115005, 124763, 167365, 242187, 374289, 403645, 502095, 623815, 1210935, 1372393, 1871445, 4117179, 6861965, 20585895]

約数ペア:

[(1, 20585895), (3, 6861965), (5, 4117179), (11, 1871445), (15, 1372393), (17, 1210935), (33, 623815), (41, 502095), (51, 403645), (55, 374289), (85, 242187), (123, 167365), (165, 124763), (179, 115005), (187, 110085), (205, 100419), (255, 80729), (451, 45645), (537, 38335), (561, 36695), (615, 33473), (697, 29535), (895, 23001), (935, 22017), (1353, 15215), (1969, 10455), (2091, 9845), (2255, 9129), (2685, 7667), (2805, 7339), (3043, 6765), (3485, 5907)]