84984280

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2131}}^1$

素因数の和:3139

約数の個数: 32

約数和(自身を含む): 191496240

約数和(自身を除く): 106511960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 2131, 3988, 4262, 4985, 7976, 8524, 9970, 10655, 17048, 19940, 21310, 39880, 42620, 85240, 2124607, 4249214, 8498428, 10623035, 16996856, 21246070, 42492140, 84984280]

約数ペア:

[(1, 84984280), (2, 42492140), (4, 21246070), (5, 16996856), (8, 10623035), (10, 8498428), (20, 4249214), (40, 2124607), (997, 85240), (1994, 42620), (2131, 39880), (3988, 21310), (4262, 19940), (4985, 17048), (7976, 10655), (8524, 9970)]