639810398

素因数分解:

$2^1\times {\mathrm{73}}^2\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:668

約数の個数: 24

約数和(自身を含む): 981487368

約数和(自身を除く): 341676970

約数列:

[1, 2, 73, 146, 173, 346, 347, 694, 5329, 10658, 12629, 25258, 25331, 50662, 60031, 120062, 921917, 1843834, 1849163, 3698326, 4382263, 8764526, 319905199, 639810398]

約数ペア:

[(1, 639810398), (2, 319905199), (73, 8764526), (146, 4382263), (173, 3698326), (346, 1849163), (347, 1843834), (694, 921917), (5329, 120062), (10658, 60031), (12629, 50662), (25258, 25331)]