21429856

素因数分解:

$2^5\times 7^2\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:276

約数の個数: 72

約数和(自身を含む): 49986720

約数和(自身を除く): 28556864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 79, 98, 112, 158, 173, 196, 224, 316, 346, 392, 553, 632, 692, 784, 1106, 1211, 1264, 1384, 1568, 2212, 2422, 2528, 2768, 3871, 4424, 4844, 5536, 7742, 8477, 8848, 9688, 13667, 15484, 16954, 17696, 19376, 27334, 30968, 33908, 38752, 54668, 61936, 67816, 95669, 109336, 123872, 135632, 191338, 218672, 271264, 382676, 437344, 669683, 765352, 1339366, 1530704, 2678732, 3061408, 5357464, 10714928, 21429856]

約数ペア:

[(1, 21429856), (2, 10714928), (4, 5357464), (7, 3061408), (8, 2678732), (14, 1530704), (16, 1339366), (28, 765352), (32, 669683), (49, 437344), (56, 382676), (79, 271264), (98, 218672), (112, 191338), (158, 135632), (173, 123872), (196, 109336), (224, 95669), (316, 67816), (346, 61936), (392, 54668), (553, 38752), (632, 33908), (692, 30968), (784, 27334), (1106, 19376), (1211, 17696), (1264, 16954), (1384, 15484), (1568, 13667), (2212, 9688), (2422, 8848), (2528, 8477), (2768, 7742), (3871, 5536), (4424, 4844)]