20939776

素因数分解:

$2^{10}\times {\mathrm{11}}^2\times {\mathrm{13}}^2$

素因数の和:68

約数の個数: 99

約数和(自身を含む): 49821933

約数和(自身を除く): 28882157

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 121, 128, 143, 169, 176, 208, 242, 256, 286, 338, 352, 416, 484, 512, 572, 676, 704, 832, 968, 1024, 1144, 1352, 1408, 1573, 1664, 1859, 1936, 2288, 2704, 2816, 3146, 3328, 3718, 3872, 4576, 5408, 5632, 6292, 6656, 7436, 7744, 9152, 10816, 11264, 12584, 13312, 14872, 15488, 18304, 20449, 21632, 25168, 29744, 30976, 36608, 40898, 43264, 50336, 59488, 61952, 73216, 81796, 86528, 100672, 118976, 123904, 146432, 163592, 173056, 201344, 237952, 327184, 402688, 475904, 654368, 805376, 951808, 1308736, 1610752, 1903616, 2617472, 5234944, 10469888, 20939776]

約数ペア:

[(1, 20939776), (2, 10469888), (4, 5234944), (8, 2617472), (11, 1903616), (13, 1610752), (16, 1308736), (22, 951808), (26, 805376), (32, 654368), (44, 475904), (52, 402688), (64, 327184), (88, 237952), (104, 201344), (121, 173056), (128, 163592), (143, 146432), (169, 123904), (176, 118976), (208, 100672), (242, 86528), (256, 81796), (286, 73216), (338, 61952), (352, 59488), (416, 50336), (484, 43264), (512, 40898), (572, 36608), (676, 30976), (704, 29744), (832, 25168), (968, 21632), (1024, 20449), (1144, 18304), (1352, 15488), (1408, 14872), (1573, 13312), (1664, 12584), (1859, 11264), (1936, 10816), (2288, 9152), (2704, 7744), (2816, 7436), (3146, 6656), (3328, 6292), (3718, 5632), (3872, 5408)]