1808920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1103}}^1$

素因数の和:1155

約数の個数: 32

約数和(自身を含む): 4173120

約数和(自身を除く): 2364200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1103, 1640, 2206, 4412, 5515, 8824, 11030, 22060, 44120, 45223, 90446, 180892, 226115, 361784, 452230, 904460, 1808920]

約数ペア:

[(1, 1808920), (2, 904460), (4, 452230), (5, 361784), (8, 226115), (10, 180892), (20, 90446), (40, 45223), (41, 44120), (82, 22060), (164, 11030), (205, 8824), (328, 5515), (410, 4412), (820, 2206), (1103, 1640)]