28686780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 92461824

約数和(自身を除く): 63775044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 53, 60, 62, 90, 93, 97, 106, 124, 155, 159, 180, 186, 194, 212, 265, 279, 291, 310, 318, 372, 388, 465, 477, 485, 530, 558, 582, 620, 636, 795, 873, 930, 954, 970, 1060, 1116, 1164, 1395, 1455, 1590, 1643, 1746, 1860, 1908, 1940, 2385, 2790, 2910, 3007, 3180, 3286, 3492, 4365, 4770, 4929, 5141, 5580, 5820, 6014, 6572, 8215, 8730, 9021, 9540, 9858, 10282, 12028, 14787, 15035, 15423, 16430, 17460, 18042, 19716, 20564, 24645, 25705, 27063, 29574, 30070, 30846, 32860, 36084, 45105, 46269, 49290, 51410, 54126, 59148, 60140, 61692, 73935, 77115, 90210, 92538, 98580, 102820, 108252, 135315, 147870, 154230, 159371, 180420, 185076, 231345, 270630, 295740, 308460, 318742, 462690, 478113, 541260, 637484, 796855, 925380, 956226, 1434339, 1593710, 1912452, 2390565, 2868678, 3187420, 4781130, 5737356, 7171695, 9562260, 14343390, 28686780]

約数ペア:

[(1, 28686780), (2, 14343390), (3, 9562260), (4, 7171695), (5, 5737356), (6, 4781130), (9, 3187420), (10, 2868678), (12, 2390565), (15, 1912452), (18, 1593710), (20, 1434339), (30, 956226), (31, 925380), (36, 796855), (45, 637484), (53, 541260), (60, 478113), (62, 462690), (90, 318742), (93, 308460), (97, 295740), (106, 270630), (124, 231345), (155, 185076), (159, 180420), (180, 159371), (186, 154230), (194, 147870), (212, 135315), (265, 108252), (279, 102820), (291, 98580), (310, 92538), (318, 90210), (372, 77115), (388, 73935), (465, 61692), (477, 60140), (485, 59148), (530, 54126), (558, 51410), (582, 49290), (620, 46269), (636, 45105), (795, 36084), (873, 32860), (930, 30846), (954, 30070), (970, 29574), (1060, 27063), (1116, 25705), (1164, 24645), (1395, 20564), (1455, 19716), (1590, 18042), (1643, 17460), (1746, 16430), (1860, 15423), (1908, 15035), (1940, 14787), (2385, 12028), (2790, 10282), (2910, 9858), (3007, 9540), (3180, 9021), (3286, 8730), (3492, 8215), (4365, 6572), (4770, 6014), (4929, 5820), (5141, 5580)]