1812920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 4151520

約数和(自身を除く): 2338600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 743, 1220, 1486, 2440, 2972, 3715, 5944, 7430, 14860, 29720, 45323, 90646, 181292, 226615, 362584, 453230, 906460, 1812920]

約数ペア:

[(1, 1812920), (2, 906460), (4, 453230), (5, 362584), (8, 226615), (10, 181292), (20, 90646), (40, 45323), (61, 29720), (122, 14860), (244, 7430), (305, 5944), (488, 3715), (610, 2972), (743, 2440), (1220, 1486)]