20973792

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1$

素因数の和:125

約数の個数: 144

約数和(自身を含む): 66890880

約数和(自身を除く): 45917088

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 23, 24, 28, 32, 42, 46, 48, 56, 59, 69, 84, 92, 96, 112, 118, 138, 161, 168, 177, 184, 224, 236, 276, 322, 336, 354, 368, 413, 472, 483, 529, 552, 644, 672, 708, 736, 826, 944, 966, 1058, 1104, 1239, 1288, 1357, 1416, 1587, 1652, 1888, 1932, 2116, 2208, 2478, 2576, 2714, 2832, 3174, 3304, 3703, 3864, 4071, 4232, 4956, 5152, 5428, 5664, 6348, 6608, 7406, 7728, 8142, 8464, 9499, 9912, 10856, 11109, 12696, 13216, 14812, 15456, 16284, 16928, 18998, 19824, 21712, 22218, 25392, 28497, 29624, 31211, 32568, 37996, 39648, 43424, 44436, 50784, 56994, 59248, 62422, 65136, 75992, 88872, 93633, 113988, 118496, 124844, 130272, 151984, 177744, 187266, 218477, 227976, 249688, 303968, 355488, 374532, 436954, 455952, 499376, 655431, 749064, 873908, 911904, 998752, 1310862, 1498128, 1747816, 2621724, 2996256, 3495632, 5243448, 6991264, 10486896, 20973792]

約数ペア:

[(1, 20973792), (2, 10486896), (3, 6991264), (4, 5243448), (6, 3495632), (7, 2996256), (8, 2621724), (12, 1747816), (14, 1498128), (16, 1310862), (21, 998752), (23, 911904), (24, 873908), (28, 749064), (32, 655431), (42, 499376), (46, 455952), (48, 436954), (56, 374532), (59, 355488), (69, 303968), (84, 249688), (92, 227976), (96, 218477), (112, 187266), (118, 177744), (138, 151984), (161, 130272), (168, 124844), (177, 118496), (184, 113988), (224, 93633), (236, 88872), (276, 75992), (322, 65136), (336, 62422), (354, 59248), (368, 56994), (413, 50784), (472, 44436), (483, 43424), (529, 39648), (552, 37996), (644, 32568), (672, 31211), (708, 29624), (736, 28497), (826, 25392), (944, 22218), (966, 21712), (1058, 19824), (1104, 18998), (1239, 16928), (1288, 16284), (1357, 15456), (1416, 14812), (1587, 13216), (1652, 12696), (1888, 11109), (1932, 10856), (2116, 9912), (2208, 9499), (2478, 8464), (2576, 8142), (2714, 7728), (2832, 7406), (3174, 6608), (3304, 6348), (3703, 5664), (3864, 5428), (4071, 5152), (4232, 4956)]