19985880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 64774080

約数和(自身を除く): 44788200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 97, 101, 102, 120, 136, 170, 194, 202, 204, 255, 291, 303, 340, 388, 404, 408, 485, 505, 510, 582, 606, 680, 776, 808, 970, 1010, 1020, 1164, 1212, 1455, 1515, 1649, 1717, 1940, 2020, 2040, 2328, 2424, 2910, 3030, 3298, 3434, 3880, 4040, 4947, 5151, 5820, 6060, 6596, 6868, 8245, 8585, 9797, 9894, 10302, 11640, 12120, 13192, 13736, 16490, 17170, 19594, 19788, 20604, 24735, 25755, 29391, 32980, 34340, 39188, 39576, 41208, 48985, 49470, 51510, 58782, 65960, 68680, 78376, 97970, 98940, 103020, 117564, 146955, 166549, 195940, 197880, 206040, 235128, 293910, 333098, 391880, 499647, 587820, 666196, 832745, 999294, 1175640, 1332392, 1665490, 1998588, 2498235, 3330980, 3997176, 4996470, 6661960, 9992940, 19985880]

約数ペア:

[(1, 19985880), (2, 9992940), (3, 6661960), (4, 4996470), (5, 3997176), (6, 3330980), (8, 2498235), (10, 1998588), (12, 1665490), (15, 1332392), (17, 1175640), (20, 999294), (24, 832745), (30, 666196), (34, 587820), (40, 499647), (51, 391880), (60, 333098), (68, 293910), (85, 235128), (97, 206040), (101, 197880), (102, 195940), (120, 166549), (136, 146955), (170, 117564), (194, 103020), (202, 98940), (204, 97970), (255, 78376), (291, 68680), (303, 65960), (340, 58782), (388, 51510), (404, 49470), (408, 48985), (485, 41208), (505, 39576), (510, 39188), (582, 34340), (606, 32980), (680, 29391), (776, 25755), (808, 24735), (970, 20604), (1010, 19788), (1020, 19594), (1164, 17170), (1212, 16490), (1455, 13736), (1515, 13192), (1649, 12120), (1717, 11640), (1940, 10302), (2020, 9894), (2040, 9797), (2328, 8585), (2424, 8245), (2910, 6868), (3030, 6596), (3298, 6060), (3434, 5820), (3880, 5151), (4040, 4947)]