21231712

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:343

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 22586048

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 116, 137, 167, 232, 274, 334, 464, 548, 668, 928, 1096, 1336, 2192, 2672, 3973, 4384, 4843, 5344, 7946, 9686, 15892, 19372, 22879, 31784, 38744, 45758, 63568, 77488, 91516, 127136, 154976, 183032, 366064, 663491, 732128, 1326982, 2653964, 5307928, 10615856, 21231712]

約数ペア:

[(1, 21231712), (2, 10615856), (4, 5307928), (8, 2653964), (16, 1326982), (29, 732128), (32, 663491), (58, 366064), (116, 183032), (137, 154976), (167, 127136), (232, 91516), (274, 77488), (334, 63568), (464, 45758), (548, 38744), (668, 31784), (928, 22879), (1096, 19372), (1336, 15892), (2192, 9686), (2672, 7946), (3973, 5344), (4384, 4843)]