1987930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{4057}}^1$

素因数の和:4078

約数の個数: 24

約数和(自身を含む): 4163508

約数和(自身を除く): 2175578

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 4057, 8114, 20285, 28399, 40570, 56798, 141995, 198793, 283990, 397586, 993965, 1987930]

約数ペア:

[(1, 1987930), (2, 993965), (5, 397586), (7, 283990), (10, 198793), (14, 141995), (35, 56798), (49, 40570), (70, 28399), (98, 20285), (245, 8114), (490, 4057)]