138713820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{330271}}^1$

素因数の和:330290

約数の個数: 48

約数和(自身を含む): 443885568

約数和(自身を除く): 305171748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 330271, 660542, 990813, 1321084, 1651355, 1981626, 2311897, 3302710, 3963252, 4623794, 4954065, 6605420, 6935691, 9247588, 9908130, 11559485, 13871382, 19816260, 23118970, 27742764, 34678455, 46237940, 69356910, 138713820]

約数ペア:

[(1, 138713820), (2, 69356910), (3, 46237940), (4, 34678455), (5, 27742764), (6, 23118970), (7, 19816260), (10, 13871382), (12, 11559485), (14, 9908130), (15, 9247588), (20, 6935691), (21, 6605420), (28, 4954065), (30, 4623794), (35, 3963252), (42, 3302710), (60, 2311897), (70, 1981626), (84, 1651355), (105, 1321084), (140, 990813), (210, 660542), (420, 330271)]