20739456

素因数分解:

$2^7\times 3^3\times {\mathrm{17}}^1\times {\mathrm{353}}^1$

素因数の和:393

約数の個数: 128

約数和(自身を含む): 64994400

約数和(自身を除く): 44254944

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 27, 32, 34, 36, 48, 51, 54, 64, 68, 72, 96, 102, 108, 128, 136, 144, 153, 192, 204, 216, 272, 288, 306, 353, 384, 408, 432, 459, 544, 576, 612, 706, 816, 864, 918, 1059, 1088, 1152, 1224, 1412, 1632, 1728, 1836, 2118, 2176, 2448, 2824, 3177, 3264, 3456, 3672, 4236, 4896, 5648, 6001, 6354, 6528, 7344, 8472, 9531, 9792, 11296, 12002, 12708, 14688, 16944, 18003, 19062, 19584, 22592, 24004, 25416, 29376, 33888, 36006, 38124, 45184, 48008, 50832, 54009, 58752, 67776, 72012, 76248, 96016, 101664, 108018, 135552, 144024, 152496, 162027, 192032, 203328, 216036, 288048, 304992, 324054, 384064, 406656, 432072, 576096, 609984, 648108, 768128, 864144, 1152192, 1219968, 1296216, 1728288, 2304384, 2592432, 3456576, 5184864, 6913152, 10369728, 20739456]

約数ペア:

[(1, 20739456), (2, 10369728), (3, 6913152), (4, 5184864), (6, 3456576), (8, 2592432), (9, 2304384), (12, 1728288), (16, 1296216), (17, 1219968), (18, 1152192), (24, 864144), (27, 768128), (32, 648108), (34, 609984), (36, 576096), (48, 432072), (51, 406656), (54, 384064), (64, 324054), (68, 304992), (72, 288048), (96, 216036), (102, 203328), (108, 192032), (128, 162027), (136, 152496), (144, 144024), (153, 135552), (192, 108018), (204, 101664), (216, 96016), (272, 76248), (288, 72012), (306, 67776), (353, 58752), (384, 54009), (408, 50832), (432, 48008), (459, 45184), (544, 38124), (576, 36006), (612, 33888), (706, 29376), (816, 25416), (864, 24004), (918, 22592), (1059, 19584), (1088, 19062), (1152, 18003), (1224, 16944), (1412, 14688), (1632, 12708), (1728, 12002), (1836, 11296), (2118, 9792), (2176, 9531), (2448, 8472), (2824, 7344), (3177, 6528), (3264, 6354), (3456, 6001), (3672, 5648), (4236, 4896)]