138801880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{15991}}^1$

素因数の和:16040

約数の個数: 64

約数和(自身を含む): 368455680

約数和(自身を除く): 229653800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 15991, 31982, 63964, 79955, 111937, 127928, 159910, 223874, 319820, 447748, 495721, 559685, 639640, 895496, 991442, 1119370, 1982884, 2238740, 2478605, 3470047, 3965768, 4477480, 4957210, 6940094, 9914420, 13880188, 17350235, 19828840, 27760376, 34700470, 69400940, 138801880]

約数ペア:

[(1, 138801880), (2, 69400940), (4, 34700470), (5, 27760376), (7, 19828840), (8, 17350235), (10, 13880188), (14, 9914420), (20, 6940094), (28, 4957210), (31, 4477480), (35, 3965768), (40, 3470047), (56, 2478605), (62, 2238740), (70, 1982884), (124, 1119370), (140, 991442), (155, 895496), (217, 639640), (248, 559685), (280, 495721), (310, 447748), (434, 319820), (620, 223874), (868, 159910), (1085, 127928), (1240, 111937), (1736, 79955), (2170, 63964), (4340, 31982), (8680, 15991)]