18197990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{641}}^1$

素因数の和:832

約数の個数: 32

約数和(自身を含む): 34945344

約数和(自身を除く): 16747354

約数列:

[1, 2, 5, 10, 17, 34, 85, 167, 170, 334, 641, 835, 1282, 1670, 2839, 3205, 5678, 6410, 10897, 14195, 21794, 28390, 54485, 107047, 108970, 214094, 535235, 1070470, 1819799, 3639598, 9098995, 18197990]

約数ペア:

[(1, 18197990), (2, 9098995), (5, 3639598), (10, 1819799), (17, 1070470), (34, 535235), (85, 214094), (167, 108970), (170, 107047), (334, 54485), (641, 28390), (835, 21794), (1282, 14195), (1670, 10897), (2839, 6410), (3205, 5678)]