81218816

素因数分解:

$2^8\times 7^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:827

約数の個数: 72

約数和(自身を含む): 188571264

約数和(自身を除く): 107352448

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 61, 64, 112, 122, 128, 224, 244, 256, 427, 448, 488, 743, 854, 896, 976, 1486, 1708, 1792, 1952, 2972, 3416, 3904, 5201, 5944, 6832, 7808, 10402, 11888, 13664, 15616, 20804, 23776, 27328, 41608, 45323, 47552, 54656, 83216, 90646, 95104, 109312, 166432, 181292, 190208, 317261, 332864, 362584, 634522, 665728, 725168, 1269044, 1331456, 1450336, 2538088, 2900672, 5076176, 5801344, 10152352, 11602688, 20304704, 40609408, 81218816]

約数ペア:

[(1, 81218816), (2, 40609408), (4, 20304704), (7, 11602688), (8, 10152352), (14, 5801344), (16, 5076176), (28, 2900672), (32, 2538088), (56, 1450336), (61, 1331456), (64, 1269044), (112, 725168), (122, 665728), (128, 634522), (224, 362584), (244, 332864), (256, 317261), (427, 190208), (448, 181292), (488, 166432), (743, 109312), (854, 95104), (896, 90646), (976, 83216), (1486, 54656), (1708, 47552), (1792, 45323), (1952, 41608), (2972, 27328), (3416, 23776), (3904, 20804), (5201, 15616), (5944, 13664), (6832, 11888), (7808, 10402)]