1220980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1489}}^1$

素因数の和:1539

約数の個数: 24

約数和(自身を含む): 2628360

約数和(自身を除く): 1407380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1489, 2978, 5956, 7445, 14890, 29780, 61049, 122098, 244196, 305245, 610490, 1220980]

約数ペア:

[(1, 1220980), (2, 610490), (4, 305245), (5, 244196), (10, 122098), (20, 61049), (41, 29780), (82, 14890), (164, 7445), (205, 5956), (410, 2978), (820, 1489)]