20745088

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^2\times {\mathrm{137}}^1$

素因数の和:184

約数の個数: 96

約数和(自身を含む): 51518160

約数和(自身を除く): 30773072

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 137, 169, 182, 208, 224, 274, 338, 364, 416, 448, 548, 676, 728, 832, 896, 959, 1096, 1183, 1352, 1456, 1664, 1781, 1918, 2192, 2366, 2704, 2912, 3562, 3836, 4384, 4732, 5408, 5824, 7124, 7672, 8768, 9464, 10816, 11648, 12467, 14248, 15344, 17536, 18928, 21632, 23153, 24934, 28496, 30688, 37856, 46306, 49868, 56992, 61376, 75712, 92612, 99736, 113984, 122752, 151424, 162071, 185224, 199472, 227968, 324142, 370448, 398944, 648284, 740896, 797888, 1296568, 1481792, 1595776, 2593136, 2963584, 5186272, 10372544, 20745088]

約数ペア:

[(1, 20745088), (2, 10372544), (4, 5186272), (7, 2963584), (8, 2593136), (13, 1595776), (14, 1481792), (16, 1296568), (26, 797888), (28, 740896), (32, 648284), (52, 398944), (56, 370448), (64, 324142), (91, 227968), (104, 199472), (112, 185224), (128, 162071), (137, 151424), (169, 122752), (182, 113984), (208, 99736), (224, 92612), (274, 75712), (338, 61376), (364, 56992), (416, 49868), (448, 46306), (548, 37856), (676, 30688), (728, 28496), (832, 24934), (896, 23153), (959, 21632), (1096, 18928), (1183, 17536), (1352, 15344), (1456, 14248), (1664, 12467), (1781, 11648), (1918, 10816), (2192, 9464), (2366, 8768), (2704, 7672), (2912, 7124), (3562, 5824), (3836, 5408), (4384, 4732)]