21158226

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 49680000

約数和(自身を除く): 28521774

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 59, 87, 118, 174, 177, 229, 261, 354, 458, 522, 531, 687, 783, 1062, 1374, 1566, 1593, 1711, 2061, 3186, 3422, 4122, 5133, 6183, 6641, 10266, 12366, 13282, 13511, 15399, 19923, 27022, 30798, 39846, 40533, 46197, 59769, 81066, 92394, 119538, 121599, 179307, 243198, 358614, 364797, 391819, 729594, 783638, 1175457, 2350914, 3526371, 7052742, 10579113, 21158226]

約数ペア:

[(1, 21158226), (2, 10579113), (3, 7052742), (6, 3526371), (9, 2350914), (18, 1175457), (27, 783638), (29, 729594), (54, 391819), (58, 364797), (59, 358614), (87, 243198), (118, 179307), (174, 121599), (177, 119538), (229, 92394), (261, 81066), (354, 59769), (458, 46197), (522, 40533), (531, 39846), (687, 30798), (783, 27022), (1062, 19923), (1374, 15399), (1566, 13511), (1593, 13282), (1711, 12366), (2061, 10266), (3186, 6641), (3422, 6183), (4122, 5133)]