21432520

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4219}}^1$

素因数の和:4357

約数の個数: 32

約数和(自身を含む): 48614400

約数和(自身を除く): 27181880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4219, 5080, 8438, 16876, 21095, 33752, 42190, 84380, 168760, 535813, 1071626, 2143252, 2679065, 4286504, 5358130, 10716260, 21432520]

約数ペア:

[(1, 21432520), (2, 10716260), (4, 5358130), (5, 4286504), (8, 2679065), (10, 2143252), (20, 1071626), (40, 535813), (127, 168760), (254, 84380), (508, 42190), (635, 33752), (1016, 21095), (1270, 16876), (2540, 8438), (4219, 5080)]