21666528

素因数分解:

$2^5\times 3^4\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:678

約数の個数: 120

約数和(自身を含む): 68728968

約数和(自身を除く): 47062440

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 72, 78, 81, 96, 104, 108, 117, 144, 156, 162, 208, 216, 234, 288, 312, 324, 351, 416, 432, 468, 624, 643, 648, 702, 864, 936, 1053, 1248, 1286, 1296, 1404, 1872, 1929, 2106, 2572, 2592, 2808, 3744, 3858, 4212, 5144, 5616, 5787, 7716, 8359, 8424, 10288, 11232, 11574, 15432, 16718, 16848, 17361, 20576, 23148, 25077, 30864, 33436, 33696, 34722, 46296, 50154, 52083, 61728, 66872, 69444, 75231, 92592, 100308, 104166, 133744, 138888, 150462, 185184, 200616, 208332, 225693, 267488, 277776, 300924, 401232, 416664, 451386, 555552, 601848, 677079, 802464, 833328, 902772, 1203696, 1354158, 1666656, 1805544, 2407392, 2708316, 3611088, 5416632, 7222176, 10833264, 21666528]

約数ペア:

[(1, 21666528), (2, 10833264), (3, 7222176), (4, 5416632), (6, 3611088), (8, 2708316), (9, 2407392), (12, 1805544), (13, 1666656), (16, 1354158), (18, 1203696), (24, 902772), (26, 833328), (27, 802464), (32, 677079), (36, 601848), (39, 555552), (48, 451386), (52, 416664), (54, 401232), (72, 300924), (78, 277776), (81, 267488), (96, 225693), (104, 208332), (108, 200616), (117, 185184), (144, 150462), (156, 138888), (162, 133744), (208, 104166), (216, 100308), (234, 92592), (288, 75231), (312, 69444), (324, 66872), (351, 61728), (416, 52083), (432, 50154), (468, 46296), (624, 34722), (643, 33696), (648, 33436), (702, 30864), (864, 25077), (936, 23148), (1053, 20576), (1248, 17361), (1286, 16848), (1296, 16718), (1404, 15432), (1872, 11574), (1929, 11232), (2106, 10288), (2572, 8424), (2592, 8359), (2808, 7716), (3744, 5787), (3858, 5616), (4212, 5144)]