21319936

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 47535264

約数和(自身を除く): 26215328

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 67, 88, 113, 128, 134, 176, 226, 256, 268, 352, 452, 536, 704, 737, 904, 1072, 1243, 1408, 1474, 1808, 2144, 2486, 2816, 2948, 3616, 4288, 4972, 5896, 7232, 7571, 8576, 9944, 11792, 14464, 15142, 17152, 19888, 23584, 28928, 30284, 39776, 47168, 60568, 79552, 83281, 94336, 121136, 159104, 166562, 188672, 242272, 318208, 333124, 484544, 666248, 969088, 1332496, 1938176, 2664992, 5329984, 10659968, 21319936]

約数ペア:

[(1, 21319936), (2, 10659968), (4, 5329984), (8, 2664992), (11, 1938176), (16, 1332496), (22, 969088), (32, 666248), (44, 484544), (64, 333124), (67, 318208), (88, 242272), (113, 188672), (128, 166562), (134, 159104), (176, 121136), (226, 94336), (256, 83281), (268, 79552), (352, 60568), (452, 47168), (536, 39776), (704, 30284), (737, 28928), (904, 23584), (1072, 19888), (1243, 17152), (1408, 15142), (1474, 14464), (1808, 11792), (2144, 9944), (2486, 8576), (2816, 7571), (2948, 7232), (3616, 5896), (4288, 4972)]