164317840

素因数分解:

$2^4\times 5^1\times {\mathrm{709}}^1\times {\mathrm{2897}}^1$

素因数の和:3619

約数の個数: 40

約数和(自身を含む): 382709880

約数和(自身を除く): 218392040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 709, 1418, 2836, 2897, 3545, 5672, 5794, 7090, 11344, 11588, 14180, 14485, 23176, 28360, 28970, 46352, 56720, 57940, 115880, 231760, 2053973, 4107946, 8215892, 10269865, 16431784, 20539730, 32863568, 41079460, 82158920, 164317840]

約数ペア:

[(1, 164317840), (2, 82158920), (4, 41079460), (5, 32863568), (8, 20539730), (10, 16431784), (16, 10269865), (20, 8215892), (40, 4107946), (80, 2053973), (709, 231760), (1418, 115880), (2836, 57940), (2897, 56720), (3545, 46352), (5672, 28970), (5794, 28360), (7090, 23176), (11344, 14485), (11588, 14180)]