80997980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82651}}^1$

素因数の和:82674

約数の個数: 36

約数和(自身を含む): 197868888

約数和(自身を除く): 116870908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82651, 165302, 330604, 413255, 578557, 826510, 1157114, 1653020, 2314228, 2892785, 4049899, 5785570, 8099798, 11571140, 16199596, 20249495, 40498990, 80997980]

約数ペア:

[(1, 80997980), (2, 40498990), (4, 20249495), (5, 16199596), (7, 11571140), (10, 8099798), (14, 5785570), (20, 4049899), (28, 2892785), (35, 2314228), (49, 1653020), (70, 1157114), (98, 826510), (140, 578557), (196, 413255), (245, 330604), (490, 165302), (980, 82651)]