1388672220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1780349}}^1$

素因数の和:1780374

約数の個数: 48

約数和(自身を含む): 4187383200

約数和(自身を除く): 2798710980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 1780349, 3560698, 5341047, 7121396, 8901745, 10682094, 17803490, 21364188, 23144537, 26705235, 35606980, 46289074, 53410470, 69433611, 92578148, 106820940, 115722685, 138867222, 231445370, 277734444, 347168055, 462890740, 694336110, 1388672220]

約数ペア:

[(1, 1388672220), (2, 694336110), (3, 462890740), (4, 347168055), (5, 277734444), (6, 231445370), (10, 138867222), (12, 115722685), (13, 106820940), (15, 92578148), (20, 69433611), (26, 53410470), (30, 46289074), (39, 35606980), (52, 26705235), (60, 23144537), (65, 21364188), (78, 17803490), (130, 10682094), (156, 8901745), (195, 7121396), (260, 5341047), (390, 3560698), (780, 1780349)]