2018987975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{1423}}^1$

素因数の和:1584

約数の個数: 48

約数和(自身を含む): 2754585600

約数和(自身を除く): 735597625

約数列:

[1, 5, 19, 25, 29, 95, 103, 145, 475, 515, 551, 725, 1423, 1957, 2575, 2755, 2987, 7115, 9785, 13775, 14935, 27037, 35575, 41267, 48925, 56753, 74675, 135185, 146569, 206335, 283765, 675925, 732845, 784073, 1031675, 1418825, 2784811, 3664225, 3920365, 4250501, 13924055, 19601825, 21252505, 69620275, 80759519, 106262525, 403797595, 2018987975]

約数ペア:

[(1, 2018987975), (5, 403797595), (19, 106262525), (25, 80759519), (29, 69620275), (95, 21252505), (103, 19601825), (145, 13924055), (475, 4250501), (515, 3920365), (551, 3664225), (725, 2784811), (1423, 1418825), (1957, 1031675), (2575, 784073), (2755, 732845), (2987, 675925), (7115, 283765), (9785, 206335), (13775, 146569), (14935, 135185), (27037, 74675), (35575, 56753), (41267, 48925)]