21405552

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:523

約数の個数: 120

約数和(自身を含む): 67852800

約数和(自身を除く): 46447248

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 19, 21, 24, 28, 38, 42, 48, 49, 56, 57, 76, 84, 98, 112, 114, 133, 147, 152, 168, 196, 228, 266, 294, 304, 336, 392, 399, 456, 479, 532, 588, 784, 798, 912, 931, 958, 1064, 1176, 1437, 1596, 1862, 1916, 2128, 2352, 2793, 2874, 3192, 3353, 3724, 3832, 5586, 5748, 6384, 6706, 7448, 7664, 9101, 10059, 11172, 11496, 13412, 14896, 18202, 20118, 22344, 22992, 23471, 26824, 27303, 36404, 40236, 44688, 46942, 53648, 54606, 63707, 70413, 72808, 80472, 93884, 109212, 127414, 140826, 145616, 160944, 187768, 191121, 218424, 254828, 281652, 375536, 382242, 436848, 445949, 509656, 563304, 764484, 891898, 1019312, 1126608, 1337847, 1528968, 1783796, 2675694, 3057936, 3567592, 5351388, 7135184, 10702776, 21405552]

約数ペア:

[(1, 21405552), (2, 10702776), (3, 7135184), (4, 5351388), (6, 3567592), (7, 3057936), (8, 2675694), (12, 1783796), (14, 1528968), (16, 1337847), (19, 1126608), (21, 1019312), (24, 891898), (28, 764484), (38, 563304), (42, 509656), (48, 445949), (49, 436848), (56, 382242), (57, 375536), (76, 281652), (84, 254828), (98, 218424), (112, 191121), (114, 187768), (133, 160944), (147, 145616), (152, 140826), (168, 127414), (196, 109212), (228, 93884), (266, 80472), (294, 72808), (304, 70413), (336, 63707), (392, 54606), (399, 53648), (456, 46942), (479, 44688), (532, 40236), (588, 36404), (784, 27303), (798, 26824), (912, 23471), (931, 22992), (958, 22344), (1064, 20118), (1176, 18202), (1437, 14896), (1596, 13412), (1862, 11496), (1916, 11172), (2128, 10059), (2352, 9101), (2793, 7664), (2874, 7448), (3192, 6706), (3353, 6384), (3724, 5748), (3832, 5586)]